Verify That the Equation Is an Identity $$\cot ^ { 2 } \frac { u } { 2 } = \frac { \csc u + \cot u } { \csc u - \cot u }$$

Q27: Use a sum or difference identity

Q28: Use the fundamental identities to find

Q29: Write the product as a sum

Q30: Use a sum or difference identity

Q31: Verify that each equation is an

Q33: Write the expression in terms of sine

Q34: Express the function as a trigonometric

Q35: Perform the transformation.<br>- <span class="ql-formula" data-value="\frac

Q36: Use the fundamental identities to find

Q37: Verify that each equation is an