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Find the exact value by using a sum or difference identity. 54) sin (215 - 95) A) - 11/13 55) sin 165 A)- 3-1)

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Find the exact value by using a sum or difference identity. 54) sin (215 - 95) A) - 11/13 55) sin 165 A)- 3-1) 4 B) - 2 43 C) - 12 D) 1/2 B)(3-1) C). 4 ) + 1) D) (3 + 1) 4 4 Find the exact value of the expression. 56) cos 35 cos 25 - sin 35 sin 25 A) 2 57) cos 2 sin 9 A). 4 B)3 C) 1/4 D) 3 2 sin 18 18 9 B) 2 C) 1 D) 1/1/1 Use the given information to find the exact value of the expression. 24 8 58) sin a= a lies in quadrant I, and cos 25 17' lies in quadrant I Find cos (a + ). 297 A) 425 416 B) 425 C) - 304 425 87 D) 425 12 59) sin a=- 13' a lies in quadrant II, and cos 5' A) - 33 63 B) 65 65 lies in quadrant I Find sin (a - ). 56 C) 65 16 D)- 65

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