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Question #70da0

1 Answer

Jan 7, 2017

Use the inverse cosine function on a calculator.

Explanation:

Enter 0.8266 into a calculator.

Hit the button marked ${cos}^{- 1}$ $cos^-1$

You should obtain the number $34.24895640$ $34.24895640$

Rounded to the nearest hundredth of a degree ${34.25}^{\circ}$ $34.25^@$ this is the reference angle.

To find the other value that occurs within your specified domain, subtract the reference angle from $360^{\circ}$ $360^@$ :

$360 - 34.24895640 = {325.75}^{\circ}$ $360 - 34.24895640 = 325.75^@$

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