Using a double-angle or half-angle formula to simplify the given expressions. (a) If cos (27°) – sin (27°) = cos(A°), then A - degrees. (b) If cos (92)– sin (9x) = cos(B), then B.

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9.2: Homework#13 (Sum and Difference Identities, double angle ic
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Question 5
Using a double-angle or half-angle formula to simplify the given expressions.
(a) lf cos (27°) – sin (27°) = cos(A°), then
A =
degrees.
(b) If cos (9x) – sin²(9x) = cos(B), then
B =
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Transcribed Image Text:tate.view.usg.edu/d2l/le/content/2194211/viewContent/33879237/View Course MICSJagesTorums CateTiuar TM X 10 Chem101 Home > Spring2021_MATH 1113-04 > Assessment 9.2: Homework#13 (Sum and Difference Identities, double angle ic Score: 1/5 1/5 answered Question 5 Using a double-angle or half-angle formula to simplify the given expressions. (a) lf cos (27°) – sin (27°) = cos(A°), then A = degrees. (b) If cos (9x) – sin²(9x) = cos(B), then B = Question Help: e Worked Example 1 Submit Question Jump to Answer Activity Details You have viewed this topic Last Visited Apr 17, 2021 9:49 AM ASUS esc %23 & 9. 7 <6
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