Question

What is the formula of Cot 2 A

Answer 1

Answer:

Goal rearranging, cot(θ2)=x for θ . Since most calculators or other aids don't have a "cot" button or a cot−1 or arccot OR acot button 1 (different word for the inverse cotangent function, cot backward), we're going to do this in terms of tan.