Welcome :: Homework Help and Answers :: Mathskey.com
Welcome to Mathskey.com Question & Answers Community. Ask any math/science homework question and receive answers from other members of the community.

13,435 questions

17,804 answers

1,438 comments

774,936 users

Verify the identity. cosx+sinx tanx=secx

0 votes

Verify the identity. cosx+sinx tanx=secx

asked Nov 20, 2013 in TRIGONOMETRY by abstain12 Apprentice

1 Answer

0 votes

Remember Cosx = 1/Secx

Tanx = Sinx/Cosx

Sin^2x+Cos^2x = 1

Left side identity = Cosx+SinxTanx

= Cosx+Sinx*Sinx*Cosx

=Cosx+Sin^2x/Cosx

= Cos^2x+Sin^2x/Cosx

= 1/Cosx

= Secx

= Right side identity.

answered Dec 16, 2013 by william Mentor

Related questions

...