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Trigonometry

Course: Trigonometry > Unit 4

Lesson 5: Using trigonometric identities

Find trig values using angle addition identities

Find sine, left parenthesis, start fraction, 19, pi, divided by, 12, end fraction, right parenthesis exactly using an angle addition or subtraction formula.
[Hint: This diagram of special trigonometry values may help.]

(Choice A)
start fraction, minus, square root of, 6, end square root, minus, square root of, 2, end square root, divided by, 4, end fraction
(Choice B)
start fraction, square root of, 2, end square root, minus, square root of, 6, end square root, divided by, 4, end fraction
(Choice C)
start fraction, square root of, 2, end square root, plus, square root of, 6, end square root, divided by, 4, end fraction
(Choice D)
start fraction, square root of, 6, end square root, minus, square root of, 2, end square root, divided by, 4, end fraction

Stuck?

Trigonometry

Course: Trigonometry > Unit 4

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