Question

if, sin(A+B)=sinA*cosB+cosA*sinB and cos(A+B)=cosA*cosB-sinA*sinB
then,find the values of sin15 and cos15

Answer 1

Answer:

sin15

Step-by-step explanation:

sin15=sin(60-45)=sin60.cos45-vos60.sin45

=√3/2.1/√2-1/2.1/√2

=(√3-1)/2√2