abhas Active member
| Subject: Sample ICSE Maths Trigonometry Questions free Sat Jan 26, 2008 9:37 pm | |
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Abhinav
| Subject: Re: Sample ICSE Maths Trigonometry Questions free Wed Feb 13, 2008 3:18 pm | |
| 1.)
→sin∂ (1-2sin2∂)/
cos∂(2cos2∂-1)
→sin∂(cos2∂-sin2∂)/
cos∂(cos2∂-sin2∂)
→sin∂/
cos∂
→tan∂ |
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Abhinav
| Subject: Re: Sample ICSE Maths Trigonometry Questions free Wed Feb 13, 2008 3:27 pm | |
| LHS
cos2∂( cos2∂-1)
cos2∂(-sin2∂)
-cos2∂sin2∂
RHS
sin2∂(sin2∂-1)
sin2∂(-cos2∂)
-cos2∂sin2∂
Hence Proved |
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| Subject: Re: Sample ICSE Maths Trigonometry Questions free | |
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