please help me quickly sinA=√3/2 find value of 2cotsquareA-1
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sin A= root 3/2
but root3/2=sin 60
therefore sin A=sin60
A=60
now,
2 cot square 60 - 1
= 2 * cot square 60 - 1
= 2 * (1/root 3)square -1
= 2 * 1/3 - 1
= 2/3 - 1
= -1/3
but root3/2=sin 60
therefore sin A=sin60
A=60
now,
2 cot square 60 - 1
= 2 * cot square 60 - 1
= 2 * (1/root 3)square -1
= 2 * 1/3 - 1
= 2/3 - 1
= -1/3
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