Question

Prove this sum


[please answer fast]​

Answer 1

EXPLANATION

STEP 1 = we can evaluate the value of

tan theta and cot theta

STEP 2 = Take LCM on denominator

STEP 3 = it comes in the value of

a/b X d/c

STEP 4 = By changing the

cosO - sinO we can change the sign

from +ve to -ve

STEP 5 = Numerator comes in the

form of a^3 - b^3

STEP 6 = evaluate the value of a^3 - b^3

in numerator

STEP 7 = Evaluate the equation.

STEP 8 = Evaluate RHS of equation

STEP 9 = Therefore,

L. H. S = R. H. S