Find the value of r that will make the equation sin 73 cos ° = r true when 0 90 °< < ° r . explain your answer.

1 answer:

5 0

The sine of an angle is equal to the cosine of the complementary angle.
That is; sin r = cos 90 -r , where r is an acute angle
Therefore;
sin 73 = cos (90-73)
sin 73 = cos 17
Hence the value of r = 17

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