Question

find the value The value of cos A, if sin A = 1/
√2


quickly answer pls
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Answer 1

PLEASE GIVE ME A BRANLIAST ANSWER AND FOLLOW ME

if sin A = 1/√2

we know that sin45 =1/✓2

then we A is 45

we know that the value of sin45 and sin45 is same so cos45 = 1/√2

OR

we know that sin (90-A)=cosA and cos(90-A) = sinA

put cos 45 in A

OR

1–sin²A=cos²A