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Trigonometric proof
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olympiad1357
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#1
Please help with this trigonometric proof!
Prove that 2sinxcosx/tanx = 2-2sin^2(x)
Prove that 2sinxcosx/tanx = 2-2sin^2(x)
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Mr M
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#2
(Original post by gcsemusicsucks)
Hope it helps!
Hope it helps!
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gcsemusicsucks
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#3
(Original post by Mr M)
Please don't post full solutions.
It's considered poor form to work on both sides of an identity at the same time. Start on one side and work towards the other.
Please don't post full solutions.
It's considered poor form to work on both sides of an identity at the same time. Start on one side and work towards the other.
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Mr M
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#4
(Original post by gcsemusicsucks)
Sorry! And I don't think I worked on both sides at the same time? I worked from the LHS
Sorry! And I don't think I worked on both sides at the same time? I worked from the LHS
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Muttley79
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#5
(Original post by gcsemusicsucks)
Sorry! And I don't think I worked on both sides at the same time? I worked from the LHS
Sorry! And I don't think I worked on both sides at the same time? I worked from the LHS
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MR1999
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#6
(Original post by olympiad1357)
Please help with this trigonometric proof!
Prove that 2sinxcosx/tanx = 2-2sin^2(x)
Please help with this trigonometric proof!
Prove that 2sinxcosx/tanx = 2-2sin^2(x)
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gcsemusicsucks
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#7
(Original post by olympiad1357)
Please help with this trigonometric proof!
Prove that 2sinxcosx/tanx = 2-2sin^2(x)
Please help with this trigonometric proof!
Prove that 2sinxcosx/tanx = 2-2sin^2(x)
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gcsemusicsucks
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#8
(Original post by Desmos)
Division by tan is the same as multiplication by cot. Also consider using Pythagoras' identity.
Division by tan is the same as multiplication by cot. Also consider using Pythagoras' identity.
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