If sin(θ -π/2) = 0.73.. find cos (-θ) plz explain how to solve

Step-by-step explanation:

It is given that:

Formula to be used:

Using Formula (1) written above:

Now, using Formula (2) written above:

So, we can say that:

We have to find the value of .

Using Formula (3) written above:

So, ultimately we need to find the value of

Using equation (1):

So, the answer is .