calculate the numerical value of tan 225 degrees + tan (-45 degrees)?

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calculate the numerical value of tan 225 degrees + tan (-45 degrees)?

2007-04-11 08:27:13 · 2 answers · asked by simba22 1 in Science & Mathematics ➔ Mathematics

2 answers

Tan 225 = 1
tan -45 = -1
tan 225 +tan-45 = 0

2007-04-11 08:32:04 · answer #1 · answered by bignose68 4 · 2⤊ 0⤋

tan 225 degrees = 1. (The reference angle is 45 degrees and
the angle is in the 3rd quadrant.)
tan(-45) degrees = -1. (Reference angle is 45 degrees
and the angle is in the 4th quadrant.)
So the sum is 0.

2007-04-11 15:34:53 · answer #2 · answered by steiner1745 7 · 0⤊ 0⤋