SOLUTION: find in radians or degrees without using a calculator. csc-1(-1) and also y= arcos 0

Question 826591: find in radians or degrees without using a calculator. csc-1(-1) and also y= arcos 0
Answer by jsmallt9(3759) (Show Source): You can put this solution on YOUR website!
is a reference to an angle. Specifically, it is a reference to the only angle between -90 and 90 (or between and ) inclusive whose csc ratio is -1. Hint: Since csc and sin are reciprocals of each other and since the reciprocal of -1 is also -1, this same angle has a sin of -1.

is also a reference to an angle. (It is another way to write .) Specifically, it is a reference to the only angle between 0 and 180 (or between 0 and ) inclusive whose cos ratio is 0.

If you haven't already figured out the answer, then it is time to look up your special angles (and start memorizing them).

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