1 Answer

AEMLoviji · Answer 1 · 2023-12-02T05:26:16+0000

Answer: We have to solve the sinusoidal equation on the Interval [0,2pi):

$-8\cos (x)=3$

Simplifying gives:

$\cos (x)=-(3)/(8)\Rightarrow(1)$

Taking the functional Inverse gives:

$x=\cos ^(-1)(-(3)/(8))$

The answer is:

$x\approx1.955r\Rightarrow\lbrack0,2\pi)$

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