Answer 85 and 86, make sure to sketch the right triangle for each

Russell E Glaue asked Jan 18, 2023

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Russell E Glaue asked Jan 18, 2023

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Step-by-step explanation

Question 85

$cos(sec_^{^(-1)}x)$

so we will have to simplify

$\begin{gathered} let \\ \theta=sec^(-1)x \\ so\text{ that} \\ sec\theta=x \end{gathered}$

Thus,

$\begin{gathered} (1)/(cos\theta)=x \\ cos\theta=(1)/(x) \end{gathered}$

Therefore

The answer for question 85 is 1/x

Rogol answered Jan 23, 2023

by Rogol

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