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Mathematics, 17.09.2019 16:30 FireBlits8950

Which relationship in the triangle must be true?
sin(b) = sin(a)
sin(b) = cos(90 – b)
cos(b) = sin(180 – b)
cos(b) = cos(a)


Which relationship in the triangle must be true?  sin(b) = sin(a) sin(b) = cos(90

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Which relationship in the triangle must be true?
sin(b) = sin(a)
sin(b) = cos(90 – b)
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