-(1)/(1+sin alpha)=(2tan alpha)/(cos alpha)=2tan alpha*sec alpha

(1)/(sec alpha - tan alpha ) - (1)/( cos alpha)=

The value of (cosec alpha-sin alpha)(sec alpha-cos alpha)(tan alpha+cot alpha) (cosec alpha-sin alpha)(sec alpha-cos alpha)(tan alpha+cot alpha) का मान क्या है?

sin 2 alpha - cos 2 alpha tan alpha =

Prove that, (sin alpha + cos alpha)/(cos alpha-sin alpha)=tan2 alpha + sec 2 alpha

(1+sin alpha)/(1+cos alpha)*(1+sec alpha)/(1+cos ec alpha)=tan alpha

Prove that: (tan^(3)alpha)/(1+tan^(2)alpha)+(cot^(3)alpha)/(1+cot^(2)alpha)=sec alpha cosec alpha-2sin alpha cos alpha

(1-2sin^(2)alpha)/(1+sin2 alpha)=(1-tan alpha)/(1+tan alpha)

(1-2sin^(2)alpha)/(1+sin2 alpha)=(1-tan alpha)/(1+tan alpha)

Find the adjoint of the following matrices: [1tan alpha sin alpha sin alpha cos alpha]( ii) [1tan alpha/2-tan alpha/21] Verify that (adjA)A=|A|I=A(adjA) for the above matrices.

Prove that, (cos alpha + sin alpha)/(cos alpha -sin alpha)-(cos alpha - sin alpha)/(cos alpha + sin alpha) = 2 tan 2 alpha