Question

(a) If tan A = 1 and tan B = √3 then evaluate (i) cos A cos B − sin A sin B (ii) sin A cos B + cos A sin B (b)Find the value of angle A if (i) sin 2A = 1 and (ii) 2 sin 3A = 1

Answer 1

Answer:

ANSWER

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

Answe

Answer 2

Answer:

hello bro please don't be sorry