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.

13,434 questions

17,804 answers

1,438 comments

59,865 users

PROVE THIS TRIGONOMETRY IDENTITY

0 votes

cot(a+b)= cotacotb-1 (over) cota+cotb?

asked Apr 8, 2016 in TRIGONOMETRY by anonymous

1 Answer

0 votes

Step 1:

The trigonometric identity is .

Consider left hand side identity .

Rewrite the identity

Addition formula for trigonometric identitites:

and .

Substitute in the trigonometric identity.

Divide numerator and denominator by .

Fundamental identities : .

= Right hand side identity.

Hence, Left hand side identity is equal to Right hand side identity.

.

Solution:

.

answered Apr 9, 2016 by lilly Expert
edited Apr 9, 2016 by lilly

Related questions

asked Oct 27, 2019 in TRIGONOMETRY by anonymous
asked Jan 22, 2015 in TRIGONOMETRY by anonymous
asked Aug 5, 2014 in TRIGONOMETRY by anonymous
...