Question

If sin(a+2b)= root3/2 and cos(a+b)=1/2 , then find a and b

Answer 1

 A+2B = 60 degrees
and
A + B = 60 degrees

B= 0 degree
A= 60 degree

Answer 2

root 3/2=sin60
sin(a+2b)= sin60
a+2b=60
a=60-2b
similarly
a+b=60
60-2b+b= 60
60-b=60
b=0
a+b=60
a+0=60
a=60
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