Create accountLogin

Recent searches

No recent searches

Search options

Only available when logged in.
mastodon.social is one of the many independent Mastodon servers you can use to participate in the fediverse.
The original server operated by the Mastodon gGmbH non-profit

Administered by:

Server stats:

355K
active users

mastodon.social: AboutStatusProfiles directoryPrivacy policy

Mastodon: AboutGet the appKeyboard shortcutsView source codev4.4.0-nightly.2025-03-25

#mathhacks

6 posts6 participants1 post today
Shauvik Kumar<p>Fast Area of a Parallelogram!<br />For area, just multiply the base × height. But here&#39;s the trick:<br />Area = a × b × sin(θ) where θ is the angle between them! Try for a = 5, b = 6, θ = 60°!<br /><a href="https://mastodon.social/tags/MathHacks" class="mention hashtag" rel="tag">#<span>MathHacks</span></a> <a href="https://mastodon.social/tags/GeometryMagic" class="mention hashtag" rel="tag">#<span>GeometryMagic</span></a></p>
Shauvik Kumar<p>Rectangle Diagonal Trick!<br />Find the diagonal using:<br />d = √(L² + B²). But try this shortcut:<br />d = √(P²/16 - A). Try for A=24, P=20!<br /><a href="https://mastodon.social/tags/MathHacks" class="mention hashtag" rel="tag">#<span>MathHacks</span></a></p>
Shauvik Kumar<p>Heron&#39;s Formula Magic!<br />Find the area of a triangle using sides a, b, c:<br />Area = √[s(s-a)(s-b)(s-c)], where s = (a+b+c)/2. Try for a=5, b=6, c=7!<br /><a href="https://mastodon.social/tags/MathHacks" class="mention hashtag" rel="tag">#<span>MathHacks</span></a> <a href="https://mastodon.social/tags/LikeAndShare" class="mention hashtag" rel="tag">#<span>LikeAndShare</span></a></p>
Shauvik Kumar<p>Fast Area of a Parallelogram!<br />For area, just multiply the base × height. But here&#39;s the trick:<br />Area = a × b × sin(θ) where θ is the angle between them! Try for a = 5, b = 6, θ = 60°!<br /><a href="https://mastodon.social/tags/MathHacks" class="mention hashtag" rel="tag">#<span>MathHacks</span></a> <a href="https://mastodon.social/tags/GeometryMagic" class="mention hashtag" rel="tag">#<span>GeometryMagic</span></a></p>
Shauvik Kumar<p>Rectangle Diagonal Trick!<br />Find the diagonal using:<br />d = √(L² + B²). But try this shortcut:<br />d = √(P²/16 - A). Try for A=24, P=20!<br /><a href="https://mastodon.social/tags/MathHacks" class="mention hashtag" rel="tag">#<span>MathHacks</span></a></p>
Shauvik Kumar<p>Heron&#39;s Formula Magic!<br />Find the area of a triangle using sides a, b, c:<br />Area = √[s(s-a)(s-b)(s-c)], where s = (a+b+c)/2. Try for a=5, b=6, c=7!<br /><a href="https://mastodon.social/tags/MathHacks" class="mention hashtag" rel="tag">#<span>MathHacks</span></a> <a href="https://mastodon.social/tags/LikeAndShare" class="mention hashtag" rel="tag">#<span>LikeAndShare</span></a></p>
Shauvik Kumar<p>The Super Easy Way to Remember Tan &amp; Cot!<br />Forget formulas! Just use this simple pattern:</p><p>🔥 Tan = sin / cos<br />🔥 Cot = cos / sin</p><p>👉 Example:<br />✔ tan 45° = sin 45° / cos 45° = 1<br />✔ cot 45° = cos 45° / sin 45° = 1</p><p>🔥 Try finding tan 60° using this trick and COMMENT your answer! ⬇️<br /><a href="https://mastodon.social/tags/MathHacks" class="mention hashtag" rel="tag">#<span>MathHacks</span></a></p>
Shauvik Kumar<p>The 90° Rule to Instantly Find Trig Values!<br />Did you know?</p><p>✔ sin(90° - x) = cos(x)<br />✔ cos(90° - x) = sin(x)<br />✔ tan(90° - x) = cot(x)</p><p>🔥 So if sin 20° = 0.342, then cos 70° = 0.342 too! 🤯</p><p>🔥 Try finding sin 65° using this trick and COMMENT your answer! ⬇️<br /><a href="https://mastodon.social/tags/MathHacks" class="mention hashtag" rel="tag">#<span>MathHacks</span></a> <a href="https://mastodon.social/tags/TrigonometryTips" class="mention hashtag" rel="tag">#<span>TrigonometryTips</span></a></p>
Shauvik Kumar<p>The Ultimate Trick to Remember All Trig Identities!<br />Struggling with sin²θ + cos²θ = 1? Use this trick:</p><p>🔥 &quot;Some People Have Curly Brown Hair Through Proper Brushing&quot;</p><p>✔ Sin²θ + Cos²θ = 1<br />✔ 1 + Tan²θ = Sec²θ<br />✔ 1 + Cot²θ = Cosec²θ</p><p>🔥 Try finding tan²30° + 1 and COMMENT your answer!⬇️<br /><a href="https://mastodon.social/tags/MathHacks" class="mention hashtag" rel="tag">#<span>MathHacks</span></a></p>
Shauvik Kumar<p>The Super Easy Way to Remember Tan &amp; Cot!<br />Forget formulas! Just use this simple pattern:</p><p>🔥 Tan = sin / cos<br />🔥 Cot = cos / sin</p><p>👉 Example:<br />✔ tan 45° = sin 45° / cos 45° = 1<br />✔ cot 45° = cos 45° / sin 45° = 1</p><p>🔥 Try finding tan 60° using this trick and COMMENT your answer! ⬇️<br /><a href="https://mastodon.social/tags/MathHacks" class="mention hashtag" rel="tag">#<span>MathHacks</span></a></p>
Shauvik Kumar<p>The Ultimate Trick to Remember All Trig Identities!<br />Struggling with sin²θ + cos²θ = 1? Use this trick:</p><p>🔥 &quot;Some People Have Curly Brown Hair Through Proper Brushing&quot;</p><p>✔ Sin²θ + Cos²θ = 1<br />✔ 1 + Tan²θ = Sec²θ<br />✔ 1 + Cot²θ = Cosec²θ</p><p>🔥 Try finding tan²30° + 1 and COMMENT your answer!⬇️<br /><a href="https://mastodon.social/tags/MathHacks" class="mention hashtag" rel="tag">#<span>MathHacks</span></a></p>
Shauvik Kumar<p>The 90° Rule to Instantly Find Trig Values!<br />Did you know?</p><p>✔ sin(90° - x) = cos(x)<br />✔ cos(90° - x) = sin(x)<br />✔ tan(90° - x) = cot(x)</p><p>🔥 So if sin 20° = 0.342, then cos 70° = 0.342 too! 🤯</p><p>🔥 Try finding sin 65° using this trick and COMMENT your answer! ⬇️<br /><a href="https://mastodon.social/tags/MathHacks" class="mention hashtag" rel="tag">#<span>MathHacks</span></a> <a href="https://mastodon.social/tags/TrigonometryTips" class="mention hashtag" rel="tag">#<span>TrigonometryTips</span></a></p>
Shauvik Kumar<p>Approximate value = Lower root + (Number - Lower Square) / (2 × Lower root)</p><p>✔ For √78:<br />8 + (78 - 64) / (2 × 8) = 8 + 14 / 16 = 8 + 0.875 = 8.88</p><p>✅ Actual value: 8.83 (Super close!)</p><p>🔥 Try √115 and COMMENT your answer! ⬇️<br /><a href="https://mastodon.social/tags/MathHacks" class="mention hashtag" rel="tag">#<span>MathHacks</span></a> <a href="https://mastodon.social/tags/MindBlown" class="mention hashtag" rel="tag">#<span>MindBlown</span></a> <a href="https://mastodon.social/tags/LikeAndShare" class="mention hashtag" rel="tag">#<span>LikeAndShare</span></a><br />2/2</p>
Shauvik Kumar<p>Approximate value = Lower root + (Number - Lower Square) / (2 × Lower root)</p><p>✔ For √78:<br />8 + (78 - 64) / (2 × 8) = 8 + 14 / 16 = 8 + 0.875 = 8.88</p><p>✅ Actual value: 8.83 (Super close!)</p><p>🔥 Try √115 and COMMENT your answer! ⬇️<br /><a href="https://mastodon.social/tags/MathHacks" class="mention hashtag" rel="tag">#<span>MathHacks</span></a> <a href="https://mastodon.social/tags/MindBlown" class="mention hashtag" rel="tag">#<span>MindBlown</span></a> <a href="https://mastodon.social/tags/LikeAndShare" class="mention hashtag" rel="tag">#<span>LikeAndShare</span></a><br />2/2</p>
Hacker News<p>Making any integer with four 2s — <a href="https://eli.thegreenplace.net/2025/making-any-integer-with-four-2s/" target="_blank" rel="nofollow noopener" translate="no"><span class="invisible">https://</span><span class="ellipsis">eli.thegreenplace.net/2025/mak</span><span class="invisible">ing-any-integer-with-four-2s/</span></a><br /><a href="https://mastodon.social/tags/HackerNews" class="mention hashtag" rel="tag">#<span>HackerNews</span></a> <a href="https://mastodon.social/tags/MakingAnyInteger" class="mention hashtag" rel="tag">#<span>MakingAnyInteger</span></a> <a href="https://mastodon.social/tags/Four2s" class="mention hashtag" rel="tag">#<span>Four2s</span></a> <a href="https://mastodon.social/tags/MathHacks" class="mention hashtag" rel="tag">#<span>MathHacks</span></a> <a href="https://mastodon.social/tags/CreativeMath" class="mention hashtag" rel="tag">#<span>CreativeMath</span></a> <a href="https://mastodon.social/tags/FunWithNumbers" class="mention hashtag" rel="tag">#<span>FunWithNumbers</span></a></p>
ExploreLive feeds
About