Question

show that sin A×cosB=cosA×sinB=sin(A-B)where A=60°and B=30°​

Answer 1

Answer:

sin60°×cos30°= cos60°×sin30°= sin(60°-30°)

=>. sin60°×cos30°= cos60°×sin30°= sin30°

=>. √3/2×√3/2=1/2×1/2= 1/2

=>. 3/4=1/4= 1/2 answer