Question

Does the trigonometric identity $\cos^2(\theta)+\sin^2(\theta)=1$ apply even when $\theta$ is not in radians or degrees but simply a fraction?

score 90 · Answer 1 · 2026-04-14 06:04:49

Does the trigonometric identity $\cos^2(\theta)+\sin^2(\theta)=1$ apply even when $\theta$ is not in radians or degrees but simply a fraction?

score 28 · Answer 2 · 2026-04-15 09:36:12

28

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Degree between vector and point

Published on 15 Apr 2026 - 9:36

score 47 · Answer 3 · 2026-04-16 14:22:02

47

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If $g'(0)>0$ write this expression $\lim\limits_{x \to 0} \frac{\sin(f(x))}{\sin(g(x))}$ using $f(0),f'(0)$ and $g(0)$.

Published on 16 Apr 2026 - 14:22

score 89 · Answer 4 · 2026-04-17 09:53:29

89

Views

Proving the identity $(\tan^2(x)+1)(\cos^2(-x)-1)=-\tan^2(x)$

Published on 17 Apr 2026 - 9:53

score 188 · Answer 5 · 2026-04-17 08:51:23

188

Views

Linear Algebra - Linear Combination and Perpendicular to Triangle

Published on 17 Apr 2026 - 8:51

score 976 · Answer 6 · 2026-04-13 15:26:36

976

Views

How do you solve the trigonometric equation $\sin(x)+x=9$?

Published on 13 Apr 2026 - 15:26

score 59 · Answer 7 · 2026-04-13 10:38:46

59

Views

Find the value of "k"

Published on 13 Apr 2026 - 10:38

score 65 · Answer 8 · 2026-04-13 02:30:19

65

Views

Finding the internal angles of a polygon inscribed in a heptagon

Published on 13 Apr 2026 - 2:30

score 438 · Answer 9 · 2026-04-09 02:52:36

438

Views

Is there better series to calculate sinh and cosh

Published on 09 Apr 2026 - 2:52

score 688 · Answer 10 · 2026-04-16 14:59:22

688

Views

Determining the order of the poles of the function $\frac{1}{\sin z-\sin 2z}$

Published on 16 Apr 2026 - 14:59

score 91 · Answer 11 · 2026-04-17 08:09:39

91

Views

Exponential, cosine, sine

Published on 17 Apr 2026 - 8:09

score 125 · Answer 12 · 2026-04-15 12:59:01

125

Views

What's the domain of $\frac{1}{\tan\left(x\right)}$?

Published on 15 Apr 2026 - 12:59

score 77 · Answer 13 · 2026-04-14 23:06:38

77

Views

Why $ \Im \frac{1}{1+e^{-s + i a }}=\frac{\sin(a)}{\cos(a)+\cosh(s)} $?

Published on 14 Apr 2026 - 23:06

score 175 · Answer 14 · 2026-04-15 14:13:40

175

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The number of solutions of the equation $1 + \sin x\sin^2 {\frac{x}{2}} =0$ in $[-\pi,\pi]$ is...

Published on 15 Apr 2026 - 14:13

score 81 · Answer 15 · 2026-04-15 13:06:33

81

Views

Reaching upon $9=1$ while solving $x$ for $3\tan{(x-15^{\circ})}=\tan{(x+15^{\circ})}$

Published on 15 Apr 2026 - 13:06

List Question

Does the trigonometric identity $\cos^2(\theta)+\sin^2(\theta)=1$ apply even when $\theta$ is not in radians or degrees but simply a fraction?

Degree between vector and point

If $g'(0)>0$ write this expression $\lim\limits_{x \to 0} \frac{\sin(f(x))}{\sin(g(x))}$ using $f(0),f'(0)$ and $g(0)$.

Proving the identity $(\tan^2(x)+1)(\cos^2(-x)-1)=-\tan^2(x)$

Linear Algebra - Linear Combination and Perpendicular to Triangle

How do you solve the trigonometric equation $\sin(x)+x=9$?

Find the value of "k"

Finding the internal angles of a polygon inscribed in a heptagon

Is there better series to calculate sinh and cosh

Determining the order of the poles of the function $\frac{1}{\sin z-\sin 2z}$

Exponential, cosine, sine

What's the domain of $\frac{1}{\tan\left(x\right)}$?

Why $ \Im \frac{1}{1+e^{-s + i a }}=\frac{\sin(a)}{\cos(a)+\cosh(s)} $?

The number of solutions of the equation $1 + \sin x\sin^2 {\frac{x}{2}} =0$ in $[-\pi,\pi]$ is...

Reaching upon $9=1$ while solving $x$ for $3\tan{(x-15^{\circ})}=\tan{(x+15^{\circ})}$

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