if cos(a+b)=0 and sin(a-b)=1/2 find the value of and b
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Answered by
2
Answer:
Cos [a+b]=0
Cos 90=0
A+b=0.....[1]
Sin[a-b]=1\2
Sin60=1\2
A-b=60.....[2]
Solving 1 n 2
A=15
B=75
Step-by-step explanation:
Answered by
4
cos (a+b)=cos 90
a+b=90--------eq 1
sin(a-b) =sin 30
a-b=30-----------eq 2
a+b=90
a-b=30
_______
2a=120
a=60
put a=60 in eq 1
a+b=90
60+b=90
b=90-60
b=30
Hope it helps you
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