2 cos (A+B) = 2 sin (A-B) = 1
Answers
Answered by
33
so, cos(A+B)=1/2
cos(A+B)=cos 60°
so, A+B=60
Again, Sin(A-B)=Sin 30°
A-B=30
A=45° and B=15°
cos(A+B)=cos 60°
so, A+B=60
Again, Sin(A-B)=Sin 30°
A-B=30
A=45° and B=15°
Anonymous:
thats the question
If 2 cos (A+B) = 2 sin (A-B) = 1. Find the values of A and B
Answered by
9
cos (a+b) = 1/2 and sin (a-b) = 1/2
a+b = 60
a- b = 30
a= 45 : b=15
a+b = 60
a- b = 30
a= 45 : b=15
u missed sin and cos
wrong solution
what?
it is perfectly correct
cos (a+b) will be only adding or subtracting by cos(a-b) not sin (a-b)
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