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CBSE Class 10 Answered

trigo...
Asked by deepitapai | 09 Mar, 2009, 01:02: PM
answered-by-expert Expert Answer

sin A = 1 / sec A . cot A = 1 /  (1 + cot 2 A)

tan A = 1 / cot A

sec A =  (1 + tan 2 A)  =  [1 + (1 / cot 2 A) ] =  (1 + cot 2 A) / cot A

Answered by | 09 Mar, 2009, 02:15: PM

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