if 15 cot a =8 find the value of sin &cos a
jyothi5741:
sina=8/17 nd cosa=15/17
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cota =8/15=adj/opp.in right angled triangle hypotenuse=17 then sina=opp/hyp= 8/17,and cosa=15/17
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sin a =15/17
cos a =8/17
ANS...
cos a =8/17
ANS...
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Cot a=8/15
Identity:(Cosec a) ^2 - (cot a) ^2=1
Cosec a=sqrt(1 + 64/225) =17/15
Sin a=15/17
Cos a=(cot a) (sin a) =8/17
Identity:(Cosec a) ^2 - (cot a) ^2=1
Cosec a=sqrt(1 + 64/225) =17/15
Sin a=15/17
Cos a=(cot a) (sin a) =8/17
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