CBSE Class 10 Answered
Without using...
Asked by sonali221994 | 17 Dec, 2009, 07:34: PM
Expert Answer
Consider
tan 1' tan 2' tan 3'...............................tan 89'
tan 1' tan 2' tan 3'...............tan ( 90-3)tan (90-2)tan (90-1)
tan 1' tan 2' tan 3'...............cot3cot2cot1
(tan 1.cot1)tan 2cot2)(tan 3cot 3)..........tan45 =1 (since tan Acot A=1)
Answered by | 18 Dec, 2009, 12:25: PM
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