cos(43+a)=sin(20+20) find the value of a
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cos(43+a)=sin(20+20)
cos(43+a) = sin40
cos(43-a) = sin(90-50)
cos(43+a) = cos50
43+a = 50a=50-43
a=7
cos(43+a) = sin40
cos(43-a) = sin(90-50)
cos(43+a) = cos50
43+a = 50a=50-43
a=7
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