Verify the Identity $\frac { \cos 4 t + \cos 5 t + \cos 6 t } { \sin 4 t + \sin 5 t + \sin 6 t } = \cot 5 t$

Q1: Use an addition or subtraction formula

Q2: Find all solutions of the equation.

Q3: Express as a sum or difference.

Q5: Find an identical expression. <span

Q6: Express as a product. <span

Q7: Use the formula <span class="ql-formula"

Q8: Verify the identity. <span class="ql-formula"

Q9: Find the exact values of

Q10: Find the solutions of the equation

Q11: Express as a product. <span