List questions from trigonometry

Published on 14 Apr 2026 - 23:58

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evaluate exponential using Euler identity

Published on 14 Apr 2026 - 5:11

152

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Evaluating a limit involving trigonometry

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Limits of $\frac{\sin^2x}{x^2}$ as $x$ approaches infinity

Published on 12 Apr 2026 - 18:11

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Given three points, is the angle positive or negative?

Published on 13 Apr 2026 - 10:02

558

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Analytical Expression for Hysteresis Loop Area

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If $\cos 25^\circ + \sin 25^\circ = k,$ then what is $\cos 20^\circ$?

Published on 15 Apr 2026 - 8:13

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Why does this get the angle of the surface?

Published on 13 Apr 2026 - 7:32

657

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Prove that $x\sqrt{1-x^2} \leq \sin x \leq x$

Published on 16 Apr 2026 - 22:04

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Solving for the principal value of a trigonometric equation

Published on 13 Apr 2026 - 23:58

151

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Proving that $\tan(x) = x$ has exactly one solution per interval $((n-\frac12)\pi, (n+\frac12)\pi)$

Published on 16 Apr 2026 - 7:48

119

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Solving a quadratic trigonometric equation?

Published on 17 Apr 2026 - 0:46

666

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Solving trigonometric equations to the fourth power.

Published on 16 Apr 2026 - 0:23

94

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How to solve $\sin^3 x=\sin x\,$?

Published on 17 Apr 2026 - 7:15

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If $0\leq a \leq 3; 0\leq b \leq 3$ and the equation $x^2 +4+3 cos(ax+b)=2x$ has at least one solution , then find the value of a+b

Published on 16 Apr 2026 - 2:23

List Question

How to solve: $\cos^2x + \sin x = 1$

evaluate exponential using Euler identity

Evaluating a limit involving trigonometry

Limits of $\frac{\sin^2x}{x^2}$ as $x$ approaches infinity

Given three points, is the angle positive or negative?

Analytical Expression for Hysteresis Loop Area

If $\cos 25^\circ + \sin 25^\circ = k,$ then what is $\cos 20^\circ$?

Why does this get the angle of the surface?

Prove that $x\sqrt{1-x^2} \leq \sin x \leq x$

Solving for the principal value of a trigonometric equation

Proving that $\tan(x) = x$ has exactly one solution per interval $((n-\frac12)\pi, (n+\frac12)\pi)$

Solving a quadratic trigonometric equation?

Solving trigonometric equations to the fourth power.

How to solve $\sin^3 x=\sin x\,$?

If $0\leq a \leq 3; 0\leq b \leq 3$ and the equation $x^2 +4+3 cos(ax+b)=2x$ has at least one solution , then find the value of a+b

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