Find sin theta cos theta and tan theta if the terminal side

Find sin theta, cos theta, and tan theta if the terminal side of theta lies along the line y = -2x in QIV. sin theta = Preview cos theta = Preview tan theta = Preview

Solution

Solution:

y= -2x

using point slope equaiton

we can see that slope of line = -2

therefore

tan() = -2

sin() = -2/ (sqrt( -2²+1²) = -2/5  

cos() = 1/5