Question

If cosA = 1/2 then the valu of A is

Answer 1

Step-by-step explanation:

cos A =

cos A = cos 60

A= 60°

sin B = 1 V2

sin B = sin 45

B= 45°

tan A - tan B

1 + tan Atan B

A22%

Now,

tan 60 tan 45

1 + tan 45 tan 60

3 - 1