NCERT Exercise 3.3 Q6 - Trigonometric Functions
Question: Prove cos(pi/4-x)cos(pi/4-y)-sin(pi/4-x)sin(pi/4-y)=sin(x+y).
Answer: The left-hand side is sin(x+y).
Full step-by-step NCERT solution with diagrams on Something by Zero.
Question: Prove cos(pi/4-x)cos(pi/4-y)-sin(pi/4-x)sin(pi/4-y)=sin(x+y).
Answer: The left-hand side is sin(x+y).
Full step-by-step NCERT solution with diagrams on Something by Zero.