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Starting from the left-hand side (LHS) of the identity
Multiply and divide the fraction $\frac{1}{\csc\left(y\right)-\cot\left(y\right)}$ by the conjugate of it's denominator $\csc\left(y\right)-\cot\left(y\right)$
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$\frac{1}{\csc\left(y\right)-\cot\left(y\right)}$
Learn how to solve trigonometric identities problems step by step online. Prove the trigonometric identity 1/(csc(y)-cot(y))=csc(y)+cot(y). Starting from the left-hand side (LHS) of the identity. Multiply and divide the fraction \frac{1}{\csc\left(y\right)-\cot\left(y\right)} by the conjugate of it's denominator \csc\left(y\right)-\cot\left(y\right). Multiplying fractions \frac{1}{\csc\left(y\right)-\cot\left(y\right)} \times \frac{\csc\left(y\right)+\cot\left(y\right)}{\csc\left(y\right)+\cot\left(y\right)}. The sum of two terms multiplied by their difference is equal to the square of the first term minus the square of the second term. In other words: (a+b)(a-b)=a^2-b^2..