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
Q58: Verify the identity. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8634/.jpg" alt="Verify the
Q59: Tell whether the reduction formula is correct
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
Q64: Use the formula <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8634/.jpg" alt="Use the
Q65: Find all solutions of the equation. <img