Question

Cos²y/1-siny=1+siny prove left is equal to right
Pls am waiting

Answer 1

Answer:

cos^2y / 1- siny =:1 + siny

LHS : cos ^2 y = 1- sin^2 y

so, 1- sin^2y / 1- siny

then the nr. 1 - sin ^ 2 y = 1^2 - siny^2 ( using a^2 - b^2 = (a + b ) ( a - b ) )

1^2 - siny^2 / 1 - siny

( 1 + siny ) ( 1 - siny ) / 1- siny ( cut( 1- siny ) and( 1 - siny )

then , 1 + siny.

RHS : 1+ siny.

LHS = RHS . ( proved )