Monday
March 27, 2017

Post a New Question

Posted by on .

express the followinf trig functions in terms of an acute angle.


(a) cos 143 degrees

(b) tan 192 degrees

  • pre calc - ,

    I do these with the following steps:
    cos 143
    - which quadrant is it in? --- 2nd
    - by CAST rule, what sign is the cosine in the 2nd? --- negative
    - how far from 143º to the x-axis ? --- 37

    so cos 143 = - cos 37

    do the other one the same way.

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question