Question

sin A
6. If COS A
cos B
En and
a
(2) 1-2
(c) 1-n
1 = m then (m? - n?) sin? B =
sin B
(b) 1 + n
(d) 1+n​

Answer 1

Answer:

The

Subtract

Cosa cosb - simasinb

Cos (m+n)