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2 years ago

11

Help pls i dont understand how to do this :')

1 answer:

andriy [413]2 years ago

3 0

Answer:

7/8

Step-by-step explanation:

Use the Pythagorean Identity

$( \sin(x) ) {}^{2} + ( \cos(x) ) {}^{2} = 1$

Plug in

$\frac{ \sqrt{15} }{8}$

for cos x.

$(\sin(x) ) {}^{2} + ( \frac{ \sqrt{15} }{8} ) {}^{2} = 1$

$( \sin(x) ) {}^{2} + \frac{15}{64} = 1$

$( \sin(x) ) {}^{2} = \frac{49}{64}$

$\sin(x) = \frac{7}{8}$

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