Question

cos(−3π4)=what is the answer​

Answer 1

Step-by-step explanation:

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Answer 2

Given: The equation is$cos(-\frac{3\pi}{4} )$.

We have to find the value of$cos(-\frac{3\pi}{4} )$.

We are solving in the following way:

We have,

The equation is$cos(-\frac{3\pi}{4} )$.

As we know that the value of $\pi$is$3.14$.

By putting this value in the above equation:

$=>cos(\frac{-3\pi}{4} )\\=>cos(-2.35)\\=>0.99$

Hence, after solving the above equation we get the value of $cos(-\frac{3\pi}{4} )$is$0.99$.