Question

0 ③
Prove that
6 Marks
Tan²A-Tan-B-SinA-Sin² B -
Cos²A COs²B
Cos² B-Cosa
Cosb Cos a​

Answer 1

Answer:

FMghk GM baby I love you too baby girl I love you and you know how I was going through my and he is going well and have

Step-by-step explanation:

jxh hrhhat

Answer 2

Answer:

Answer

L.H.S=cos

2

A+cos

2

B−2cosAcosBcos(A+B)

=cos

2

A+cos

2

B−2cosAcosB(cosAcosB−sinAsinB)

=cos

2

A+cos

2

B−2cos

2

Acos

2

B+2cosAsinAcosBsinB

R.H.S=sin

2

(A+B)

=(sin(A+B))

2

=(sinAcosB+cosAsinB)

2

=sin

2

Acos

2

B+cos

2

Asin

2

B+2sinAcosAsinBcosB

=(1−cos

2

A)cos

2

B+cos

2

A−cos

2

Acos

2

B

=cos

2

B−cos

2

A+cos

2

B+cos

2

A−cos

2

Acos

2

B.

=cos

2

A+cos

2

B−2cos

2

Acos

2

B+2cosAsinAcosBSinB

Hence,

L.H.S=R.H.S

Step-by-step explanation:

HOPE IT'S HELP YOU

PLEASE FOLLOW ME

AND MARK ME IN BRAINLIST ALSO.