Question

prove it .. 1 - (cos²a)/( 1+sin a) = sin a

Answer 1

Answer:

Step-by-step explanation:

LHS :

=1-[cos²A/(1+sinA)]

[USING cos²A+sin²A=1]

=1-[(1-sin²A) /(1+sinA)]

[USING a²-b²=(a+b)(a-b) ]

=1-[(1+sinA)×(1-sinA)/(1+sinA)]

=1-(1-sinA)

=1-1+sinA

=sinA

=RHS