A sin A = 8/10, find the values of cos A and than
A.
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Answer:
sinA=8/10=opp/hyp from using Pythagoras theorem
(hypotenuse)2=( side )2+ (square )2
(hypotenuse)2-(side )2=( side )2
(10)square-(8)square=(side)2
100-64=(side)2
36=(side)2
6=side
cosA=adjacent/hypotenuse
cosA=6/10
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pls listen to ur teacher class
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