dtrip369 Posts: 1, Reputation: 1 New Member #1 Apr 13, 2011, 07:15 PM
verifying trigonometric identities solver?
I have a project due tom and I have to answer 16 problems and I need help with 3

1.TANx(COTx+TANx)=SEC^2x
2.SINx(1+COT^2x)=CSCx
3.TANxCOSx=COTx(SECx-COSx)

Any help will be greatly appreciated thanksssssssss
 Unknown008 Posts: 8,076, Reputation: 723 Uber Member #2 Apr 14, 2011, 08:21 AM

1. (left) Expand, and remember one identity.

2. (left) Substitute cot^2x by 1 + csc^2x and then expand.

3. (right) Express all in terms of cos and sin. Combine fractions, use the Pythagorean idendity and simplify. You'll see that there is something wrong.

 Question Tools Search this Question Search this Question: Advanced Search

Check out some similar questions!

Verify identities solver? [ 9 Answers ]

tan2x=(2tanx)/(1-tan^2x)

Verify trigonometric identities solver? [ 4 Answers ]

(sinx)/(sinx+1)=(cscx-1)/(cot^(2)x)

Verifying trigonometric identities solver [ 4 Answers ]

verify that sin(A)+sin(B)+sin(C) = sin(A+B+C) + 4sin((B+C)/2)sin((A+C)/)sin((A+B)/2)

Verifying trigonometric identities--precalculus [ 1 Answers ]

cosēβ-sinēβ=2cosēβ-1

Verifying trigonometric identities [ 1 Answers ]

Hello everyone: Could you help me verify these identities: (tan-sin*cos)/sin^2 = tan (1-sin^2-cos^2+sin^2*cos^3)/sin = sin^2*cos^2*cot Thanks in advance, Peter