Evaluating the sine of a difference of two angles can be done using sin(A – B) =?

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter6: The Trigonometric Functions
Section6.2: Trigonometric Functions Of Angles
Problem 21E
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Looking for thelp with this two part question plz.

Evaluating the sine of a difference of two angles can be done using sin(A – B) =?
a) cos(A) cos(B) + sin(A) sin(B)
b) cos(A) cos(B) – sin(A) sin(B)
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c) None of these
d) sin(A) sin(B) – cos(A) cos(B)
Transcribed Image Text:Evaluating the sine of a difference of two angles can be done using sin(A – B) =? a) cos(A) cos(B) + sin(A) sin(B) b) cos(A) cos(B) – sin(A) sin(B) - c) None of these d) sin(A) sin(B) – cos(A) cos(B)
The special triangle, and has corresponding sides of:
a) 4, 4, 2
b) 9, 4, 4
O c) 1, 1, √2
d) 1, √3,2
Transcribed Image Text:The special triangle, and has corresponding sides of: a) 4, 4, 2 b) 9, 4, 4 O c) 1, 1, √2 d) 1, √3,2
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