Ask Experts Questions for FREE Help !
Ask
    lbcp15's Avatar
    lbcp15 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Oct 30, 2011, 05:35 PM
    Solve these three proofs?
    (Sin A/(1 Cos A)) ((1 Cos A)/Sin A)= 2Csc A


    1-Tan^2(-A)=Sec^2 A


    (1-tan^2 A)/(1 Tan^2 A)=2Cos^2 A -1
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
    Uber Member
    		  
    #2

    Oct 31, 2011, 12:17 AM
    1. Start by combining the fractions.

    2. Use the fact that tan(-a) = -tan(a)

    3. Convert everything to the cos and sin ratios and simplify the fraction on the left.

    Can you try those out for a start?
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Algebraic proofs [ 1 Answers ]

Given: angle is congruent to angle 4; angle 5 is congruent to angle 6 Prove: triangle pqx is congruent to triangle pty

Algebraic proofs [ 0 Answers ]

1. Given 4x + 5 = 2x - 19 prove x = -12 statement reason 1. 1. 2. 2. 3. 3. 4. 4.

Trig proofs [ 1 Answers ]

Trig proofs how do you solve: tanx + cotx = secxcscx

Geometric Proofs [ 1 Answers ]

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

View more questions Search