Question

WILL AWARD MEDAL FOR HELP! At what angles will −sin t = cos t?

Answer 1

do you have your unit circle with you?

Answer 2

yes

Answer 3

ok, look and see which ones have coordinates that are same numbers, but opposite signs.

Answer 4

then, those will be the angles

Answer 5

there will be one in the second quadrant and one in the 3rd quadrant :)

Answer 6

so one will be between 90 and 180 degrees and one will be between 270 and 360

Answer 7

gtg lemme know if thats right

Answer 8

ok thanks!