Question

if tanθ = a/b find cosθ

Answer 1

here is your answer mate.....

hope it helps you.....

Answer 2

tanA=p/b=a/b(a=p and b=b)

then,we find

h=a^2+b^2

now,casA=b/h=b/a^2+b^2

so,cosA=a^2+b
hope it will helps,
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