Question

10) Prove the following:
i) sin2 A cos2 B + cosA sin2 B +
cos? A cos2 B + sin2 A sin2 B=1​

Answer 1

Answer:

sin 2 A + cos 2 A =1 + sin 2 B+ cos 2B = 1

1+1=2......(1)

same to same

1+1=2 ....(2)

such as

2/2=1 answer

Answer 2

Answer:

hence proved

Step-by-step explanation:

lhs x 0 = rhs x 0

0 = 0