1. Which compound angle formula is the easiest to use to develop the expression 2 sin #cos ? a. b. addition formula for cosine addition formula for sine C. d. subtraction formula for sine subtraction formula for cosine 2. The trigonometric equation cos²x - sin²x = 0 has the same solutions as the trigonometric equation cos2x = 0 a. true b. false

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter6: The Trigonometric Functions
Section6.2: Trigonometric Functions Of Angles
Problem 18E
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1. Which compound angle formula is the easiest to use to develop the expression 2 sin #cos ?
a.
b.
addition formula for cosine
addition formula for sine
C.
d.
subtraction formula for sine
subtraction formula for cosine
2. The trigonometric equation cos²x - sin²x = 0 has the same solutions as the trigonometric equation cos2x = 0
a.
true
b.
false
Transcribed Image Text:1. Which compound angle formula is the easiest to use to develop the expression 2 sin #cos ? a. b. addition formula for cosine addition formula for sine C. d. subtraction formula for sine subtraction formula for cosine 2. The trigonometric equation cos²x - sin²x = 0 has the same solutions as the trigonometric equation cos2x = 0 a. true b. false
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