Question

give the exact value of sec(-5pi/3) how do u do this?

Answer 1

Why not find the cosine of -5pi/3? Invert that result, simplify and celebrate.

Answer 2

can u pls show

Answer 3

im a visual learner

Answer 4

Please think about 5pi/3. In which quadrant would this be located? Note that pi/3 is equivalent to 60 degrees, and that 5pi/3 is thus equivalent to 5(60 deg) =300 deg.

Once you've drawn that, change direction. Instead of going counterclockwise for the positive angle 5pi/3, go counterclockwise, beginning with the positive x-axis.

Again: your first goal is to determine the quadrant in which the angle -5pi/3 has its terminal line.