Question

Please solve the given attachment.... Don't spam..... Otherwise i will report the answer...
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Answer 1

Answer:

b/√(a²+b²)

Step-by-step explanation:

let  θ=tan⁻¹(a/b)

then  tanθ=a/b

hence   cos [tan⁻¹(a/b)]

                 =cosθ

                     =b/√(a²+b²)

hope this helps you

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