Q53: Verify the identity. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8634/.jpg" alt="Verify the
Q54: Express as a product. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8634/.jpg" alt="Express
Q55: If a mass that is attached to
Q56: A graph of <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8634/.jpg" alt="A graph
Q57: Verify the identity. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8634/.jpg" alt="Verify the
Q59: Tell whether the reduction formula is correct
Q60: Find an identical expression. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8634/.jpg" alt="Find
Q61: Find the exact values of <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8634/.jpg"
Q62: Use sum-to-product formulas to find the solutions
Q63: Verify the identity. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8634/.jpg" alt="Verify the