Noah B.

asked • 08/24/22

FIND SOLUTION TO EQUATION URGENT

1 = 8 cos(2x+1) - 3

1 Expert Answer

By:

Mark M. answered • 08/24/22

Tutor
5.0 (278)

Mathematics Teacher - NCLB Highly Qualified

See tutors like this
See tutors like this

1 = 8 cos (2x + 1) - 3

-2 = 8 cos (2x + 1)

-0.25 = cos (2x + 1)

cos-1 -0.25 = -104.4775

2x + 1 = -104.4775


Can you solve for x and answer?


Another solution in QIII/

Upvote • 0 Downvote
More
Report

Cynthia L.

tutor
First simplify by isolating the cosine function by adding 3 to both sides. Then divide by 8 on both sides. Then use the distributive property to distribute the cosine: cos(2x) + cos(1) = 1/2. The cosine of 1 is 1 which you can subtract on both sides. You can then take the inverse cosine (or multiply by 1/cosine) to get 2x=120. X is 60.
Report

08/26/22

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.