please solve these questions

Asked by www1028 | 31st Aug, 2009, 06:30: PM

Expert Answer:

a) if sinA :cosA ::8:15, find sinA and cosA.

sinA /cosA =8/15,
tan A =8/15 So Oposite side/Adjacent side =8/15 i.e Oposite side =8k Adjacent side =15 k and hypotenuse =17 k for some integer k
So Sin A = 8/17 cos A = 15/17

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Answered by  | 1st Sep, 2009, 11:07: AM

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