Asked by anonymous
how do you find the function csc 225 degrees without using a calculator?
Answers
Answered by
drwls
It will have the same sign as 1/csc225 = sin 225, which is negative in the third quadrant.
The absolute value is the same as that of reference angle to the 180 degree, -x axis, which is 45 degrees.
csc 45 = 1/sin 45 = sqrt 2
The value of csc 225 is therefore
-sqrt2 = -1.414
The absolute value is the same as that of reference angle to the 180 degree, -x axis, which is 45 degrees.
csc 45 = 1/sin 45 = sqrt 2
The value of csc 225 is therefore
-sqrt2 = -1.414
Answered by
anonymous
thank you drwls!
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