Question

sin? A cos2 B + cos2 A sin? B +
cos? A cos2 B + sin? A sin? B = 1​

Answer 1

Answer:

L.H.S

⇒sin

2

Acos

2

B−cos

2

Asin

2

B

We know that

sin

2

A+cos

2

A=1

Therefore,

⇒sin

2

A(1−sin

2

B)−(1−sin

2

A)sin

2

B

⇒sin

2

A−sin

2

Asin

2

B−sin

2

B+sin

2

Asin

2

B

⇒sin

2

A−sin

2

B

R.H.S

Step-by-step explanation:

Please follow me