Robbie has 1 acre lawn. When he mows the lawn, it takes him 1/5 hour ro mow 1/8 acre. how long will it take Robbie to mow the fu
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let's keep in mind that, in the II Quadrant, cosine is negative and sine, is positive.
cosine is adjacent/hypotenuse, however the hypotenuse is simply a radius unit, and thus is never negative, so in the -(2/3) the negative must be the numerator, -2.