`((1 + costheta)/(sintheta))^2 = (1 + costheta)/(1 - sintheta) `

If alpha, beta are roots of x^2 sintheta-(costhetasintheta+1)x+xcostheta=0 where alphaltbeta and thetaepsilon(0,pi//4) then value of sum_(n=0)^oo(alpha^n +((-1)^n)/beta^n) (A) (1-costheta)/(sintheta)+(1-sintheta)/(costheta) (B) 1/(1+costheta)+1/(1-sintheta) (C) 1/(1-costheta)+1/(1-sintheta) (D) 1/(1-costheta)-1/(1+sintheta)

(1-costheta)/(1+costheta)=((1-costheta)/(sintheta))^2=(cosectheta-cottheta)^2

Evaluate : (( 1 + sintheta ) ( 1 - sintheta )) / ( ( costheta ) ( - costheta ) )

If (costheta)/(1+sintheta)+(costheta)/(1-sintheta)=2sqrt(2) and theta is acute , then what is the value (in degrees ) of theta ?

Simplify (1-costheta)/sintheta

Simplify (1-costheta)/sintheta

Evaluate costheta/(1+sintheta)

Find the value of theta , if (costheta)/(1-sintheta)+(costheta)/(1+sintheta)=4,thetale90^(@) .

(1-costheta)/(sintheta)+(sintheta)/(1-costheta) =___________.

If cot theta= (7)/(8) then the value of ((1+ sintheta)(1-sintheta))/((1+costheta)(1-costheta)) = …………….