prove sin75*=[√6+2]/4
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sin2x=2sinxcox
x=15 degree
Also,(sinx)^2+(cosx)^2=1
Let sin x be Z
Let cos x be Y
Then sin15 degree=0.25
sin(a+b)=sinacosb+cosasinb
Take a=15 deg and b=60 deg
sin60 deg=√3/2
Solve it to get the answer
x=15 degree
Also,(sinx)^2+(cosx)^2=1
Let sin x be Z
Let cos x be Y
Then sin15 degree=0.25
sin(a+b)=sinacosb+cosasinb
Take a=15 deg and b=60 deg
sin60 deg=√3/2
Solve it to get the answer
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