((sqrt(3)+2cos A)/(1-2cos A))+((1+sin A)/(13-2cos theta))^(-3)?

((sqrt(3)+2cos A)/(1-2sin A))^(-3)+((1+2sin A)/(sqrt(3)-2cos A))^(-3)=

((sqrt(3)+2cos A)/(1-2sin A))^(-3)+((1+2sin A)/(sqrt(3)-2cos A))^(-3)=

((sqrt(3)+2sin A)^(3))/((1-2cos A)^(3))+((1+2cos A)^(3))/((sqrt(3)-2sin A)^(3))

((sqrt(3)+2sin A)^(3))/((1-2cos A)^(3))+((1+2cos A)^(3))/((sqrt(3)-2sin A)^(3))=

root(7)((1+cos theta)/(1-cos theta))+sqrt((1-cos theta)/(1+cos theta))=2cos ec theta

If cot theta=(1)/(sqrt(3)), show that (1-cos^(2)theta)/(2-sin^(2)theta)=(3)/(5)

If f(x)=cos^(-1)((1)/(sqrt(13)))(2cos x-3sin x)+sin^(-1)((1)/(sqrt(13)))(2cos x+3sin x)wdot rt sqrt(1+x^(2)) then find (df(x))/(dx) at x=(3)/(4)

The derivative of the function f(x)=cos^(-1)((1)/(sqrt(13))(2cos x-3sin x))+sin^(-1)((1)/(sqrt(13))(2cos x+3sin x)), with respect to sqrt(1+x^(2)) at x=(3)/(4) is

tan theta=-(1)/(sqrt(3)),sin theta=(1)/(2) and cos theta=-(sqrt(3))/(2)

Solve sqrt(3) cos theta-3 sin theta =4 sin 2 theta cos 3 theta .