Login | Register
FREE Head Start Lectures this January - book now! HSC: register here | QCE: register here | VCE: register here

Welcome, Guest. Please login or register.

January 22, 2020, 04:09:46 am

Author Topic: Further Trig  (Read 185 times)  Share 

0 Members and 1 Guest are viewing this topic.

david.ko3

  • Trailblazer
  • *
  • Posts: 25
  • Respect: 0
Further Trig
« on: March 31, 2019, 02:20:13 pm »
0
Hello! How would I do this question?
Given

show that:

Thanks so much!!!

fun_jirachi

  • MOTM: AUG 18
  • Moderator
  • Forum Leader
  • *****
  • Posts: 570
  • All doom and Gloom.
  • Respect: +305
Re: Further Trig
« Reply #1 on: March 31, 2019, 02:48:06 pm »
+4


It's just a crap ton of algebra. Usually, when there's a show that, first thing to try would be just algebra bashing since it normally yields you the answer straight away. (Try this next time for a similar question!) Hope this helps :)
« Last Edit: March 31, 2019, 04:56:58 pm by fun_jirachi »
Failing everything, but I'm still Flareon up.

HSC 2018: Modern History [88] | 2U Maths [98]
HSC 2019: Physics [92] | Chemistry [93] | English Advanced [87] | Maths Extension 1 [98] | Maths Extension 2 [97]
ATAR: 99.05

UCAT: 3310 - Verbal Reasoning [740] | Decision Making [890] | Quantitative Reasoning [880] | Abstract Reasoning [800]