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2022-02-08

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asked 2021-12-19

What is the derivative of ${\mathrm{sin}}^{2}\left(x\right)$

asked 2021-09-16

Write the trigonometric expression as an algebraic expression. $\mathrm{cos}(\mathrm{arcsin}x-\mathrm{arctan}2x)$

asked 2021-09-11

evaluate the function for the indicated values. $f\left(x\right)=\left[x\right].f\left(2.1\right)$

asked 2021-06-01

Use trigonometric identities to transform the left side of the equation into the right side.

asked 2021-05-02

Solve for $\theta$ .

$\mathrm{tan}\left(2\theta \right)-\mathrm{tan}\left(2\theta \right){\mathrm{tan}}^{2}\left(\theta \right)=2$

asked 2021-05-28

Given that $f\left(x\right)=\mathrm{cos}x$ , show that
$\frac{f(x+h)-f\left(x\right)}{h}=\mathrm{cos}x\left(\frac{\text{cosh}-1}{h}\right)+\mathrm{sin}x\left(\frac{\text{sinh}}{h}\right)$

asked 2021-09-02

Evaluate:

1)$\mathrm{cos}\left(\frac{9\pi}{4}\right)$

2)$\mathrm{sin}\left(\frac{-9\pi}{4}\right)$

3)$\mathrm{cot}\left(\frac{-5\pi}{4}\right)$

4)$-\mathrm{cot}\left(\frac{\pi}{4+17\pi}\right)$

1)

2)

3)

4)