Question

can someone help me please?!

how does one find tan 13pi/4 without using a calculator or decimals?

Answer 1

remember the fact that

\[revolution = 2\pi\]


\[\frac {13\pi}{4} = 3 \frac{1}{4} \pi\]

so the angle is pi/4 more that 1 and 1/2 revolutions

so its a 3rd a quadrant angle where tan is positive so

\[\tan(\frac{13\pi}{4} = \tan (\frac{\pi}{4})\]

should be easy to find now

Answer 2

Thank you so much! Would 1 be the correct answer? @campbell_st

Answer 3

that would be my answer