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Prove the identity. 2tanx/1+tan^2x=sin^2x

Prove the identity.2tanx/1+tan^2x=sin^2x
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2. asked by Josh
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Prove :cosx-cosy= -2sin(x+y/2)sin(x-y/2)Prove: 2cot-2tanx= 4-2sec^2x / tanx
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2. asked by Sarah
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What can 2tanx+cosx equal to an identity
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Prove the identity: cos^4(x)-sin^4(x)=1-2sin^2(x).with explanationim confused on this one cause of the 4th power of the sine.
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2. asked by Anonymous
3. 642 views
prove 2csc(2x)= csc(x)^2tanx
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2. asked by Kyler
3. 1,730 views
prove that cosx(tanx+2)(2tanx+1)=2secx+5sinx
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2. asked by krishan
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find the derivative of the functions F(x)= tan^2(x) and G(x) = sec^2(x).... based on your calculations what can you say about
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2. asked by Anonymous
3. 335 views
Select all the true statements about identities.A) You may use proven identities to prove other identities. B) An identity is
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2. asked by TeeKay
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I keep trying to solve this by factring but I can't seem to get! It's so frustrating!The problem is 1+tan2x=0 This is how I
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2. asked by Jen
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find the value of a and b , dy/dx(sinx/2tanx+cosx)=a+bsinxtan^2x/(2tanx+cosx)^2differential equation
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2. asked by sadia khan
3. 514 views