Sin15°

1.	Sin15°
Answer» Sin15° = Sin ( 45 - 30 ) {{Now ... we know that , Sin ( A + B ) = SinA Cos B + Cos A sin B }}Thus , Sin 15° = Sin45 Cos 30 + Sin30 Cos 45 => after putting values we will get :: root3+ 1 / 2 root 2

Discussion