Khushi S.

asked • 01/24/22

how would you prove this: tan(x-y)+tan(y-z)=(sec^2(y)(tan(x)-tan(z)) / (1+tan(x)tan(y))(1+tan(y)tan(z))

1 Expert Answer

By:

Mark M. answered • 01/24/22

Tutor
5.0 (278)

Mathematics Teacher - NCLB Highly Qualified

See tutors like this
See tutors like this

Locate formula for tan (x - y) and tan (y - z).

Determine common denominator, add, and simplify.

This is a whole lot of ariithmetic.

Upvote • 0 Downvote
More
Report

Khushi S.

I still keep doing it wrong, I'm not sure why. I started with (tan x - tan y) / (1 + tan x tan y) + (tan y - tan z) / (1 + tan y tan z). I don't think I get how to add them properly.
Report

01/24/22

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.