Prove the Identity - Double Angle \(\displaystyle{\cot{{\left({A}\right)}}}=\frac{{\sin{{\left({2}{A}\right)}}}}{{{1}-{\cos{{\left({2}{A}\right)}}}}}\)

Deegan Chase

Deegan Chase

Answered question

2022-03-31

Prove the Identity - Double Angle
cot(A)=sin(2A)1cos(2A)

Answer & Explanation

Drahthaare89c

Drahthaare89c

Beginner2022-04-01Added 19 answers

sin(2A)1cos(2A)=2sinAcosA1cos2A+sin2A
=2sinAcosA2sin2A
=cotA

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