Establish the Identity $$\cot ^ { 3 } x = \cot x \left( \csc ^ { 2 } x - 1 \right)$$

Q161: Express the sum or difference as

Q162: Establish the identity.<br>- <span class="ql-formula" data-value="\sin

Q163: Use the information given about the

Q164: Establish the identity.<br>- <span class="ql-formula" data-value="\cos

Q165: Establish the identity.<br>- <span class="ql-formula" data-value="\frac

Q167: Use a calculator to find the

Q168: Express the product as a sum

Q169: Use the information given about the

Q170: Find the exact value of the

Q171: Find the exact solution of the