Use the sum-to-product formulas to find the exact value of the given expression. 
Definitions:
Q31: Calculate the binomial coefficient: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8633/.jpg" alt="Calculate
Q51: Do the operation and express the answer
Q55: Graph the function using translations. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8633/.jpg"
Q88: Find the trigonometric form of the complex
Q89: Find a polynomial with the given zeros.
Q100: Graph the function using translations. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8633/.jpg"
Q106: The point <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8633/.jpg" alt="The point
Q114: Evaluate the expression. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8633/.jpg" alt="Evaluate the
Q137: Solve <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8633/.jpg" alt="Solve by
Q143: Given <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8633/.jpg" alt="Given ,