Trig Equation Watch

Candy_Shop
Badges: 11
Rep:
?
#1
Report Thread starter 12 years ago
#1
5 sin2x = 4 cos2x

okay so I know sinx/cosx = tanx is involved but what next?

Thanks for the help
0
reply
Libertine
Badges: 1
Rep:
?
#2
Report 12 years ago
#2
5sin2x = 4cos2x
Divide by cos2x
5tan2x = 4
tan2x = 4/5
Solve in double whatever range you have been given to get 2x, and I expect you can figure out the rest.
0
reply
Candy_Shop
Badges: 11
Rep:
?
#3
Report Thread starter 12 years ago
#3
(Original post by Libertine)
5sin2x = 4cos2x
Divide by cos2x
5tan2x = 4
tan2x = 4/5
Solve in double whatever range you have been given to get 2x, and I expect you can figure out the rest.
Wow! Thank you. what a great part of the forum, its almost midnight and I get an answer pretty much instantly !!
0
reply
X

Quick Reply

Attached files
Write a reply...
Reply
new posts
Latest
My Feed

See more of what you like on
The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Personalise

University open days

  • University of East Anglia
    All Departments Open 13:00-17:00. Find out more about our diverse range of subject areas and career progression in the Arts & Humanities, Social Sciences, Medicine & Health Sciences, and the Sciences. Postgraduate
    Wed, 30 Jan '19
  • Solent University
    Careers in maritime Undergraduate
    Sat, 2 Feb '19
  • Sheffield Hallam University
    City and Collegiate Campus Undergraduate
    Sun, 3 Feb '19

Brexit: Given the chance now, would you vote leave or remain?

Remain (666)
80.73%
Leave (159)
19.27%

Watched Threads

View All