Question

show that sin 35=cos(90-35)

Answer 1

LHS = sin35°

RHS = cos(90°-35°) = sin35°
LHS = RHS
( since, Cos(90-a) = Sina)

Answer 2

there is a formula i.e.,sinA=cos[90-A]
given A=35
 by putting value of A in formula ,we get
sin35=cos[90-35]
hence proved




hope this answer hepfull 2 u