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stepan [7]
3 years ago
9

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

Mathematics
1 answer:
Greeley [361]3 years ago
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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Setler79 [48]

Answer:

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Step-by-step explanation:

Rewrite x^{2}-6x+7=0 in the form

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To Find:

a = ?

b = ?

Solution:

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Which can be written as

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Substituting in equation 1 we get

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