2 years ago

Find the function value.. . cos^2(7pi/8)=

1 answer:

4 0

To evaluate this function, we use the calculator. We change the setting to radian first because we are using pi and thensimply input the cosine of 7 pi over 8. Then we square the answer. <span>We expect this number to be less than 1. </span>The function value is 0.8536.

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