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Work out the following identities

Verify the identities.Cos^2x - sin^2x = 2cos^2x - 1 When verifying identities, can I work on both side? Ex. 1 - sin^2x - sin^2x
1. 1 answer
2. asked by Shadow
3. 658 views
This question has me stuck. Use the Pythagorean identity sin^2 Θ + cos^2 Θ = 1 to derive the other Pythagorean identities, 1 +
1. 1 answer
2. asked by Iris
3. 1,151 views
when we think about our multiple identities , most of us will find that we both dominant and targeted at the same time. But it
1. 1 answer
2. 71 views
When we think about our multiple identities, most of us will find that we are both dominant and targeted at the same time. But
1. 1 answer
2. asked by Sisipho
3. 76 views
Select all the true statements about identities.A) You may use proven identities to prove other identities. B) An identity is
1. 0 answers
2. asked by TeeKay
3. 754 views
Trigonometry identities are so hard...I need some help proving these identities: *Oh, and I'm only in grade 11, so the
1. 5 answers
2. asked by Lucy
3. 752 views
Are any of these three problems identities?1. Cos^2x-sin^2x=1-2sin^2x 2. Sinxsecx=cosxcscx 3. Sec^4x-tan^4/sec^2x=1+sin^2x If
1. 1 answer
2. asked by Melody
3. 1,085 views
Are any of these three problems identities?1. Cos^2x-sin^2x=1-2sin^2x 2. Sinxsecx=cosxcscx 3. Sec^4x-tan^4/sec^2x=1+sin^2x If
1. 2 answers
2. asked by Melody
3. 795 views
5+4x-7=4x-2-x label contradictions and identities show all work?
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2. asked by missy
3. 434 views
How do you express sin4x as a trigonometric funcition of x using the identities? I think that you are supposed to start with the
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2. asked by Taylor
3. 2,532 views