NCERT Miscellaneous Exercise Q10 - Trigonometric Functions

Question: If sin x=1/4 and x lies in quadrant II, find sin(x/2), cos(x/2) and tan(x/2).

Answer: sin(x/2)=sqrt((4+sqrt(15))/8), cos(x/2)=sqrt((4-sqrt(15))/8), tan(x/2)=4+sqrt(15).

Full step-by-step NCERT solution with diagrams on Something by Zero.

All Chapter 3 solutions