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.

13,459 questions

17,854 answers

1,446 comments

807,106 users

Can someone help me with a Trig problem?

+2 votes

The problem reads: solve the equation in the given domain: 0<x<2pi

sin2x = -1

I already have the answer sheet, I just can't figure out how to do it. Could someone show me the process?

asked Jan 17, 2013 in TRIGONOMETRY by anonymous Apprentice

1 Answer

+2 votes

sin 2x = -1

Trigonometry table in sin270 = -1

So, sin 2x = sin 270

Then 2x = 270

Divide each side by 2.

x = 135 = 3π/4

Domain is 3π/4.

answered Feb 1, 2013 by richardson Scholar

Related questions

asked Dec 12, 2014 in PHYSICS by anonymous
asked Nov 15, 2014 in TRIGONOMETRY by anonymous
asked Jul 18, 2014 in TRIGONOMETRY by anonymous
asked Jun 17, 2014 in TRIGONOMETRY by anonymous
...