Question

Someone help to find sin theta, cos theta, and tan theta for (11pi)/2

Answer 1

yeah do you know how to find \(\frac{11\pi}{2}\) on the unit circle?

Answer 2

I have the unit circle, but \[\frac{ 11\Pi }{ 2 }\] is not on there

Answer 3

keep counting out \(\frac{\pi}{2}\) until you get to 11 of them

Answer 4

ok, so then you take the first of the ordered pair for sin

Answer 5

you will see that \(\frac{11\pi}{2}\) is coterminal with \(\frac{3\pi}{2}\)

Answer 6

yes i found that, but then how do you find sin theta

Answer 7

ordered pair at \(\frac{3\pi}{2}\) is \((0,-1)\) read off your answers from there

Answer 8

so is the answer just 0?

Answer 9

first coordinate is cosine
second coordinate is sine

Answer 10

ok so it is -1

Answer 11

yes

Answer 12

thanks! you just saved me so much time on my homework.