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Find the exact value of the expression given below. cos(- 105°) Rewrite the expression using a sum or difference formula. Choose the correct answer below. A. cos(- 105°) = cos ((- 60°) + (- 45°)) = cos (- 60°)( cos - 45°) + sin (- 60°)( sin - 45°) B. cos(- 105°) = cos ((- 60°) + (- 45°)) = sin (- 60°)( cos - 45°) + cos (- 60°)( sin - 45°) c. cos(- 105°) = cos ((- 60°) + (– 45°)) = cos (- 6o°)( cos - 45°) - sin (- 60°)( sin - 45°) O D. cos(- 105°)= cos ((-60°) + (-45°)) = sin (- 60°)( cos - 45°) - cos (-60°)( sin - 45°)

Find the exact value of the expression given below. cos(- 105°) Rewrite the expression using a sum or difference formula. Choose the correct answer below. A. cos(- 105°) = cos ((- 60°) + (- 45°)) = cos (- 60°)( cos - 45°) + sin (- 60°)( sin - 45°) B. cos(- 105°) = cos ((- 60°) + (- 45°)) = sin (- 60°)( cos - 45°) + cos (- 60°)( sin - 45°) c. cos(- 105°) = cos ((- 60°) + (– 45°)) = cos (- 6o°)( cos - 45°) - sin (- 60°)( sin - 45°) O D. cos(- 105°)= cos ((-60°) + (-45°)) = sin (- 60°)( cos - 45°) - cos (-60°)( sin - 45°)

Algebra & Trigonometry with Analytic Geometry
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter6: The Trigonometric Functions
Section: Chapter Questions
Problem 16RE
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Find the exact value of the expression given below.
 
cos(−105°)
Rewrite the expression using a sum or difference formula. Choose the correct answer below.
Find the exact value of the expression given below. cos( - 105°) Rewrite the expression using a sum or difference formula. Choose the correct answer below. O A. cos(- 105°) = cos ((- 60°) + (- 45°)) = cos (– 60°)( cos - 45°)+ sin (- 60°)( sin – 45°) O B. cos(- 105°) = cos ((- 60°) + (– 45°)) = sin (- 60°)( cos - 45°) + cos (- 60°)( sin - 45°) %3D OC. cos(- 105°)= cos (( – 60°) + ( – 45°)) = cos (- 60°)( cos - 45°)- sin (- 60°)( sin - 45°) O D. cos(- 105°) = cos ((- 60°) + (- 45°)) = sin (– 60°)( cos - 45°)- cos (- 60°)( sin - 45°) %3D %3D Click to select your answer and then click Check Answer.
Transcribed Image Text:Find the exact value of the expression given below. cos( - 105°) Rewrite the expression using a sum or difference formula. Choose the correct answer below. O A. cos(- 105°) = cos ((- 60°) + (- 45°)) = cos (– 60°)( cos - 45°)+ sin (- 60°)( sin – 45°) O B. cos(- 105°) = cos ((- 60°) + (– 45°)) = sin (- 60°)( cos - 45°) + cos (- 60°)( sin - 45°) %3D OC. cos(- 105°)= cos (( – 60°) + ( – 45°)) = cos (- 60°)( cos - 45°)- sin (- 60°)( sin - 45°) O D. cos(- 105°) = cos ((- 60°) + (- 45°)) = sin (– 60°)( cos - 45°)- cos (- 60°)( sin - 45°) %3D %3D Click to select your answer and then click Check Answer.
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