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Essential Question: How do I use trig identities to solve equations and verify identities?. How do I use the double angle and half angle formulas?. Double Angle Formulas. sin 2 . = 2 sin cos . cos 2 . = cos 2 - sin 2 . = 2cos 2 - 1. = 1 – 2 sin 2 . tan 2 =. Ex. 1.
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Essential Question: How do I use trig identities to solve equations and verify identities? How do I use the double angle and half angle formulas?
Double Angle Formulas sin 2 = 2 sin cos cos 2 = cos2 - sin2 = 2cos2 - 1 = 1 – 2 sin2 tan 2 =
Ex. 1 Use the following to find sin2, cos2 and tan2 5 -12 13
Ex. 1 5 -12 13 Use the following to find sin2, cos2 and tan2
Ex. 1 5 -12 13 Use the following to find sin2, cos2 and tan2
Ex. 2 and terminates in the first quadrant, find the exact value of sin2, cos2 and tan 2. 5 You Try!!
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