If Sin of a + b is equal to root 3 by 2 and cos b is equal to root 3 by 2 then the value of a is
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cos b = root3 /2
cos b = cos 30
on comparing both sides
b = 30
Now
sin a + b = root3 /2
sin a+ b = sin 60
on comparing
a + b = 60
but b = 30
therefore a = 30.
cos b = cos 30
on comparing both sides
b = 30
Now
sin a + b = root3 /2
sin a+ b = sin 60
on comparing
a + b = 60
but b = 30
therefore a = 30.
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