Diamond Q.

asked • 9d

Precalculus Question

Find the value of sin 2θ, cos 2θ and tan 2θ in the interval (pi/2,pi) if cosθ=-4/5

1 Expert Answer

By:

Mark M.

The interval is pi/2 to pi, i.e. the second quadrant. tan 2u = (2 tan u) / (1 - tan^2 u)
Report

9d

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.