if sin A=20/29 than find cos A
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Answered by
1
Answer:
cos A =19/29
Step-by-step explanation:
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Answered by
0
Answer:
cos A = 21/29
Step-by-step explanation:
sinA = 20/29(given) =P/H
In ΔABC ,
H²= P²+B²
(AC)²= (BC)²+(AB)²
(29)²= (20)²+ (AB)²
841= 400+(AB)²
(AB)²= 841-400
(AB)² = 441
AB=√441
AB=21
CosA=B/H=21/29
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