why does tan(-120) = - 0.71312301
and not sqrt 3 ?
I tried making a graph and still came up with sqrt 3??
4 answers
so what would 0.71312301 be as a sqrt?
tan -120 = (sqrt(3)) = 1.73205
coterminal with 240 deg in QIII so positive
reference angle is 60
Where did you get - 0.71312301
Are you using a cal. set to the wrong setting, rads vs degrees?
coterminal with 240 deg in QIII so positive
reference angle is 60
Where did you get - 0.71312301
Are you using a cal. set to the wrong setting, rads vs degrees?
I used a calculator to check my answer, (which was originally sqrt 3) and then on the calculator I got 0.713... so I was confused ... anyway thank you
also, for even vs. odd functions it saids that tan(-angle) = - tan(angle)
so that doesn't matter since tan is positive in the QIII?
so that doesn't matter since tan is positive in the QIII?