trigo...
Asked by deepitapai | 9th Mar, 2009, 01:02: PM
Expert Answer:
sin A = cos A / cot A = 1/ (secA cot A) = 1/ 
(1+tan2A) . cotA = 1/ (1+ cot2A)
Similarly others can be calculated
Answered by | 9th Mar, 2009, 02:10: PM
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