How can you simplify the trigonometric expression sin? æ+cos² æ cos² æ ? A) You can cancel out cos? æ, so that you are left with sin² x. B) You can use the Fundamental Identity to replace sin? æ + cos² x by 1. cos² z This simplifies to tan² x + 1. cos² æ * C) You can create two fractions: sin² z cos² z O A and B are options, but C is invalid. B and C are options, but A is invalid. O A and C are options, but B is invalid.

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