List questions from trigonometry

Published on 25 Mar 2026 - 6:02

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simplification of $\cos\left( \frac{1}{2}\arcsin (x)\right)$

Published on 18 Jan 2018 - 19:11

420

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Why does this trig equation have three solutions?

Published on 22 Mar 2026 - 18:04

55

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Simplifying $\tan^{-1} {\cot(\frac{-1}4)}$

Published on 29 Mar 2026 - 16:48

130

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Solve $\sin^{-1}x+\sin^{-1}(1-x)=\cos^{-1}x$ and avoid extra solutions while squaring

Published on 20 Mar 2026 - 3:45

1.5k

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How to solve $2\cos( \frac {\pi}3 (\theta-1)) +5=4$

Published on 22 Mar 2026 - 19:03

85

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Change the order of integration involving Fresnel integrals

Published on 24 Mar 2026 - 17:38

11.7k

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Find the greatest and least values of $(\sin^{-1}x)^2+(\cos^{-1}x)^2$

Published on 29 Mar 2026 - 20:48

124

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How to evaluate $\lim_{x\rightarrow 0^-} \sec^{-1}(1+x)$?

Published on 19 Jan 2018 - 10:30

2.1k

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Calculate periodicity of $f(x) = \cos(\sin(x))$

Published on 22 Mar 2026 - 12:01

56

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Can you please tell me if such an identity exists

Published on 22 Mar 2026 - 22:16

164

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Solve $ \int_\frac{-π}{3}^{\frac{π}{3}}\frac{\cos^2(x)-\sin^2(x)}{\cos^2(x)}dx$

Published on 19 Jan 2018 - 13:46

4.6k

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Equilateral triangle within a circumscribed circle

Published on 29 Mar 2026 - 16:07

807

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value of tan(x) as x approaches 90

Published on 22 Mar 2026 - 15:51

216

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2018 January Challenge: Prove inequality in geometry problem

Published on 30 Mar 2026 - 0:33

List Question

Find the argument of complex number

simplification of $\cos\left( \frac{1}{2}\arcsin (x)\right)$

Why does this trig equation have three solutions?

Simplifying $\tan^{-1} {\cot(\frac{-1}4)}$

Solve $\sin^{-1}x+\sin^{-1}(1-x)=\cos^{-1}x$ and avoid extra solutions while squaring

How to solve $2\cos( \frac {\pi}3 (\theta-1)) +5=4$

Change the order of integration involving Fresnel integrals

Find the greatest and least values of $(\sin^{-1}x)^2+(\cos^{-1}x)^2$

How to evaluate $\lim_{x\rightarrow 0^-} \sec^{-1}(1+x)$?

Calculate periodicity of $f(x) = \cos(\sin(x))$

Can you please tell me if such an identity exists

Solve $ \int_\frac{-π}{3}^{\frac{π}{3}}\frac{\cos^2(x)-\sin^2(x)}{\cos^2(x)}dx$

Equilateral triangle within a circumscribed circle

value of tan(x) as x approaches 90

2018 January Challenge: Prove inequality in geometry problem

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