Login

Search the forums now!

Welcome, Guest. Please login or register.

October 21, 2025, 08:15:38 pm
Pages: [1]   Go Down

Author Topic: Proving Trig  (Read 804 times)  Share 

0 Members and 1 Guest are viewing this topic.

wildareal

  • Victorian
  • Forum Leader
  • ****
  • Posts: 595
  • Respect: +4
Proving Trig
« on: July 28, 2010, 05:28:17 pm »
0
Prove:
sec(x)+tan(x)=cos(x)/1-sin(x)

Thanks
Logged
Wildareal '11

Year 11:
Methods 3/4

Year 12:
English 3/4 Latin 3/4 Specialist 3/4 Chem 3/4 Uni Maths

cipherpol

  • Victorian
  • Forum Obsessive
  • ***
  • Posts: 282
  • Respect: +3
Re: Proving Trig
« Reply #1 on: July 28, 2010, 05:47:05 pm »
0
multiply RHS by and simplify
Logged
2009: Biology
2010: Eng Lang, Chem, Physics, Methods, Spesh

jimmy999

  • Victorian
  • Forum Leader
  • ****
  • Posts: 635
  • Respect: +5
Re: Proving Trig
« Reply #2 on: August 02, 2010, 08:25:31 pm »
0
Quote from: cipherpol on July 28, 2010, 05:47:05 pm
multiply RHS by and simplify
Proofs normally work in the way of turning the LHS to the right hand side. Given the RHS involves cos and sin, I would change sec and tan to involve sin and cos and then simplify. This is a handy trick. Also if the angles are different on each side, then change the angles first
Logged
Religion and Society (38), IT - Software Development (45) English (35), Chemistry (49), Methods CAS (48), Specialist Maths (50)
ENTER: 99.15

2010 - Bachelor of Science(Maths)/Engineering(Chemical) - Monash Clayton

Linkage1992

  • Victorian
  • Forum Obsessive
  • ***
  • Posts: 329
  • Respect: +1
Re: Proving Trig
« Reply #3 on: August 07, 2010, 01:25:19 am »
0
shit you got a 50 in spesh? any more tips?
Logged
Atar 2010: 98.55
English: 45 Methods: 41 Physics: 39  Spesh: 37 Chem: 34
IT apps (2009): 47
Pages: [1]   Go Up