Question

Prove that
plz someone do this..​

Answer 1

Sin(sq) 20 + sin(sq) 70 - tan(sq) 45 = sin(sq)20 + sin(sq) [90 - 20] - (1) sq [tan 45 = 1] = sin(sq)20 + .

Answer 2

Answer:

Sin(sq) 20 + sin(sq) 70 - tan(sq) 45 = sin(sq)20 + sin(sq) [90 - 20] - (1) sq [tan 45 = 1] = sin(sq)20 + ...

Using this formula solve it further...