Yefim S. answered • 11/11/21
Tutor
5
(20)
Math Tutor with Experience
cos2x = 1 - 2sin2x = 1 - 2(4/5)2 = 1 - 32/25 = - 7/25
Matheus A.
asked • 11/11/21How would I solve this?
Given sin x = 4 / 5 and x is a 2nd quadrant angle, find cos 2x. Show all work
Follow
•
1
Add comment
More
Report
1 Expert Answer
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.
