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#1 2007-10-13 07:41:07
- Daniel123
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- Registered: 2007-05-23
- Posts: 663
Trigonometric Identities
In both of the following, eliminate θ to give an equation relating x and y:
a) x = sin θ, y = tan θ
b) x = sin θ + cos θ, y = cos θ - sin θ
Thanks.
Last edited by Daniel123 (2007-10-13 09:24:06)
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#2 2007-10-13 10:44:36
- JaneFairfax
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- Registered: 2007-02-23
- Posts: 6,868
Re: Trigonometric Identities
(a)
which you can rearrange as
(b) Square both equations and add.
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#3 2007-10-13 11:13:29
- Daniel123
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- Registered: 2007-05-23
- Posts: 663
Re: Trigonometric Identities
Thanks 
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#4 2007-10-13 17:19:06
- phamthephong100
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- Registered: 2007-10-13
- Posts: 8
Re: Trigonometric Identities
too easy
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