Question

if m is equal to Cos A by cos B and n is equal to sin a sin b prove that n square minus and m square into sin square b is equal to 1 minus m square

Answer 1

Answer:

Given: m=Cos A ,B

n=sin A,B

sinCos

$sin ^{2} { - cos}^{2} = 1$m-n =1

m-n-sin square b

=1-sin square b