Question
Mon April 23, 2012 By:

i wud like a littlt help here

Expert Reply
Tue April 24, 2012
cot A = 4/3
Using identity, cosec2A = 1 + cot2A = 25/9
So, cosec A = 5/3
Hence, sinA = 3/5
 
Using identity, cosA = 4/5
 
Now, substitute these values in the given expression to get the answer.
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