Find an Online Tutor Now

Bill D.

asked • 12/14/16

Trig Identity

Prove sin4x = 4 (sin x-2 sin^3 x)/secx
I can't seem to solve this! Halp!!!

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.


Find an Online Tutor Now

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