Q76: Find the identity for the function. <img
Q77: Verify the identity. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8634/.jpg" alt="Verify the
Q78: Verify the identity. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8634/.jpg" alt="Verify the
Q79: Verify the identity. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8634/.jpg" alt="Verify the
Q80: Verify the identity. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8634/.jpg" alt="Verify the
Q82: Use sum-to-product formulas to find the solutions
Q83: Make the trigonometric substitution <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8634/.jpg" alt="Make
Q84: If an earthquake has a total horizontal
Q85: Find all solutions of the equation. <img
Q86: Verify the identity. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8634/.jpg" alt="Verify the