78. PROVE: Addition Formula for Tangent Use the Addition Formulas for Cosine and Sine to prove the Addition Formula for Tangent. [Hint: Use sin(s + 1) cos(s + 1) tan(s + 1) = and divide the numerator and denominator by cos s cos t.]
78. PROVE: Addition Formula for Tangent Use the Addition Formulas for Cosine and Sine to prove the Addition Formula for Tangent. [Hint: Use sin(s + 1) cos(s + 1) tan(s + 1) = and divide the numerator and denominator by cos s cos t.]
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter6: The Trigonometric Functions
Section6.3: Trigonometric Functions Of Real Numbers
Problem 24E
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