Question

cos(−3π4)= answer
of the question

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Answer 1

Given: The equation is$cos(-3\pi4)$.

We have to find the value of the above equation.

We are solving in the following way:

We have,

=> $cos(-3\pi4)$

$=>cos(-3\times3.14\times4)\\=>cos(-37.68)\\=>0.7914$

Hence, after solving the above equation we get the value of the above equation will be$0.7914$.