Question

Use an identity to write the expression as a single trigonometric function.\\ \sqrt{\frac{1 + \cos 142^{\circ}}{2}}\\ ...\\ \sqrt{\frac{1 + \cos 142^{\circ}}{2}} = \boxed{\text{ }} ^{\circ} \quad \text{(Type an exact answer.)}

          Use an identity to write the expression as a single trigonometric function.\\
\sqrt{\frac{1 + \cos 142^{\circ}}{2}}\\
...\\
\sqrt{\frac{1 + \cos 142^{\circ}}{2}} = \boxed{\text{ }} ^{\circ} \quad \text{(Type an exact answer.)}

Use an identity to write the expression as a single trigonometric function.

√((1 + cos142^∘)/(2))

...

√((1 + cos142^∘)/(2)) = ^∘ (Type an exact answer.)

Added by James S.

Precalculus with Limits

Ron Larson 2nd Edition

Instant Answer

Solved by Expert Uma Kumari

Step 1

First, let's use the identity cos(θ) = cos(-θ) to rewrite cos(142) as cos(-142): cos(142) = cos(-142) Show more…

Show all steps

Thanks for your feedback!

Use an identity to write the expression as a single trigonometric function. cOS 1420 cos 142 (Type an exact answer:)

Play audio

Feedback

Uma Kumari and 101 other subject Precalculus educators are ready to help you.

Ask a new question

Labs

Want to see this concept in action?

NEW

Explore this concept interactively to see how it behaves as you change inputs.

View Labs

Key Concepts

Recommended Videos

Recommended Textbooks

Ace is your personal tutor. It breaks down any question with clear steps so you can learn.

Start Using Ace

Continue solving this problem

Create a free account to:

View full step-by-step solution
Ask follow-up questions with Ace AI
Save progress and study later

Question

Use an identity to write the expression as a single trigonometric function.\\ \sqrt{\frac{1 + \cos 142^{\circ}}{2}}\\ ...\\ \sqrt{\frac{1 + \cos 142^{\circ}}{2}} = \boxed{\text{ }} ^{\circ} \quad \text{(Type an exact answer.)}

Please give Ace some feedback