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" (iii) "(pi)/(2)x^(2)+x...

" (iii) "(pi)/(2)x^(2)+x

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Lt_(x to (pi)/(2))(pi/2-x)tan x is equal to (i) 1 (ii) -1 (iii) (pi)/(2) (iv) (2)/(pi)

Write the coefficients of x^(2) in each of the following : (pi)/(2)x^(2) + x

Prove that: (cos(pi+x)cos(-x))/(sin(pi-x)cos((pi)/(2)+x))=cot^(2)x

Prove that (cos(pi+x)cos(-x))/(sin(pi-x)cos((pi)/(2)+x))=cot^(2)x

The value of int_(-pi//2)^(pi//2)(x^(2)+x cosx+tan^(5)x+1)dx is equal to

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int_(0)^((pi)/(2))(x^(2))/((x sin x+cos x)^(2))dx

f (x) = {(cos x) / ((pi) / (2) -x), x! = (pi) / (2) 1, x = (pi) / (2)