If sin A = cos 35 , then find the value of A
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1
cosA=sin(90°-A)
Hence,cos35°=sin55°=sin A
Therefore,A=55°
Hence,cos35°=sin55°=sin A
Therefore,A=55°
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Answered by
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Sin a = cos 35
cos (90 -a) = cos 35
90 - a = 2npie +- 35
take +
90 -35 - 2n pie = a
55 - 2 n pie= a
take -
90 +35 - 2n pie = a
125 - 2n pie = a
cos (90 -a) = cos 35
90 - a = 2npie +- 35
take +
90 -35 - 2n pie = a
55 - 2 n pie= a
take -
90 +35 - 2n pie = a
125 - 2n pie = a
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