An angle measures 18º less than the measure of its complementary angle. What is the
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The answer is 80 hope this helps :)
or
divide both sides by 2
sinΘ = -
Since the sin ratio is negative then Θ is in third / fourth quadrants
Θ = (
) =
related acute angle
Θ = ( π + ) =
or Θ = ( 2π - ) =