Question

If cos2 + 2 sin2 + 3 cos2 + 4 sin2 + ........(200) terms = 10025, where is an acute angle, then the value of sin cos is (1) 1 3 2 (2) 1 3 2 (3) 3 1 2 (4) 0

Answer 1

0 is the answer i hope its help you