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