i need help with my fst homework!
if sin(theta)=-.65 and pi is greater than or equal to theta, and theta is less then 3pi/2 evaluate the sin(pi-theta) sin(-theta) sin(pi/2(theta) and tan(pi+theta)
and how many inches are in a degree? I DONT UNDERSTAND, PLEASE HELP!
thank bunches!
2006-12-10 10:48:12 · 2 answers · asked by soccerboarder90 1 in Science & Mathematics ➔ Mathematics
sin(pi - theta) = sin (theta)
sin(-theta) = -sin(theta)
sin(pi/2 - theta) = cos(theta) = sqrt(1 - sin^2 (theta)) = 0.76
tan(pi + theta) = tan(theta) = sin(theta) / cos(theta) = - 0.85
inche is the unit of length
degree is the unit of angle
they are not similar, so you can't ask such a question like that
2006-12-10 11:13:35 · answer #1 · answered by James Chan 4 · 0⤊ 0⤋
part B:
in a unit circle, C = pi x diameter so C=2pi.
If the unit is inches, the circumference = 6.28 inches = 360degrees
1 degree is 6.28/360 = 0.017444 inches
2006-12-10 11:18:18 · answer #2 · answered by davidosterberg1 6 · 0⤊ 0⤋