Question

Problem 68. (10 points) Use an identity to find the exact value of each expression: Note: You are not allowed to use decimals in your answer. sin(79°) cos(41°) + cos(79°) sin(41°)=_ sin(56°) cos(11°) - cos(56°) sin(11°)=_ Correct Answers: • 0.866025403784439 • 0.707106781186548

          Problem 68. (10 points)
Use an identity to find the exact value of each expression:
Note: You are not allowed to use decimals in your answer.
sin(79°) cos(41°) + cos(79°) sin(41°)=_
sin(56°) cos(11°) - cos(56°) sin(11°)=_
Correct Answers:
• 0.866025403784439
• 0.707106781186548

Problem 68. (10 points)
Use an identity to find the exact value of each expression:
Note: You are not allowed to use decimals in your answer.
sin(79°) cos(41°) + cos(79°) sin(41°)=
sin(56°) cos(11°) - cos(56°) sin(11°)=
Correct Answers:
• 0.866025403784439
• 0.707106781186548

Added by Andres C.

Precalculus with Limits

Ron Larson 2nd Edition

Instant Answer

Solved by Expert Teresa Fuston

03/25/2022

Step 1

The sum identity for sine is sin(A + B) = sin(A)cos(B) + cos(A)sin(B), and the difference identity is sin(A - B) = sin(A)cos(B) - cos(A)sin(B). Show more…

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Problem 68. (10 points) Use an identity to find the exact value of each expression: Note: You are not allowed to use decimals in your answer. sin(79deg )cos(41deg )+cos(79deg )sin(41deg )= sin(56deg )cos(11deg )-cos(56deg )sin(11deg )= Correct Answers: 0.866025403784439 0.707106781186548 Problem 68.10 points) Use an identity to find the exact value of each expression: Note: You are not allowed to use decimals in your answer. sin79)cos41)+cos79sin41)= sin56cos11-cos56sin11= CorrectAnswers: 0.866025403784439 0.707106781186548