Question

yadi cos ( A-B)=1/2 and sin(A+B)= 1/2 to A and B ka value

Answer 1

cos(A-B)=cos60 sin(a+b)=sin30
* a-b=60...........(i) * a+b=30.........(ii)


(i)+(ii)
a-b=60
a+b=30

*2a=90
*a=45

********a+b=30
45+b=30
b=30-45
b= -15


*a=45, b= -15


hope it is helpful