 Ask Remember Me? mwilt Posts: 3, Reputation: 1 New Member #1 Mar 4, 2009, 03:04 PM
trigonometry proofs
how do you prove that

tanx+coty / tanxcoty = tany+cotx galactus Posts: 2,271, Reputation: 282 Ultra Member #2 Mar 4, 2009, 03:50 PM

This only requires about one step.

Expand it out and look at the cancellations.

See it? mwilt Posts: 3, Reputation: 1 New Member #3 Mar 4, 2009, 08:52 PM

Thank you! I get it now! cazey Posts: 1, Reputation: 1 New Member #4 Jun 9, 2009, 07:01 PM

how do I prove that sin20=x/8? Perito Posts: 3,139, Reputation: 150 Ultra Member #5 Jun 9, 2009, 07:42 PM

That looks more like an equation than a proof.

 Question Tools Search this Question Show Printable Version Email this Page Search this Question: Advanced Search

## Check out some similar questions!

Algebraic Proofs [ 3 Answers ]

how do I do this? Fill in the missing information in this Algebraic proof. Two lines intersect. Angle 1 equals ( 3x + 20) . Angle 2 = (5x - 16) , Angles 1 and 3 are vertical angles. The measure of angle 1 = the measure of angle 3. (Vertical Angles are Congruent) a.) _____ = (5x - 16)...

Geometric Proofs [ 1 Answers ]

I need help solving my geometric proofs I need step by step instructions that I can apply to any proof.

Pre cal proofs [ 2 Answers ]

can someone please help me slove these 4 questionss? 1) Sin/ Csc + Cos/ Sec =1 2) sin^2/Sec^2-1 = Cos^2

Precal proofs [ 1 Answers ]

can someone please help me slove these 4 questionss? 1) Sin/ Csc + Cos/ Sec =1 2) sin^2/Sec^2-1 = Cos^2