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Please help using identities (2tan30)/(1-tan^2

Please help using identities(2tan30)/(1-tan^2 30)
1. 3 answers
2. asked by Hannah
3. 390 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. 1,180 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. 93 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. 94 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. 782 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. 795 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. 823 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. 1,113 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
1. 1 answer
2. asked by Taylor
3. 2,568 views
What did you learn about diversity at the global, country, and institutional levels?Based on your understanding of diversity,
1. 1 answer
2. 143 views