Question

(Tan A×Tan A)-(Sin A×Sin A ) evaluate

Answer 1

Answer:

Correct option is

A

2

2

1−

3

Given,

tanA=1

⇒A=45

∘

tanB=

3

⇒B=60

∘

cosAcosB−sinAsinB

=cos45cos60−sin45sin60

=

2

1

2

1

−

2

1

2

3

=

2

2

1−

3