Section 7.5 summary

Some of the formulas you might need to know to work the problems.

Tangent(theta)= y/x

Secant(theta)=r/x

Cosecant(theta)=r/y

Cotangent(theta)=x/y

Now here are some examples you can use to understand.

If theta is a second quadrant angle and tan(theta)= -3/4, find the values of the other five trigonometric functions.

Since theta is a second quadrant angle and tan(theta)=y/x= -3/4, you can draw a graph. I cant draw a graph on here but you should be able to visualize what im saying.

cos(theta)=x/r= -4/5

sin(theta)= y/r= 3/5

sec(theta)= 1/cos(theta)= -5/4

csc(theta)= 1/ sin(theta)= 5/3

cot(theta)= 1/ tan( theta)= -4/3

so that is some of the stuff i learned from graphing sine and cosine in section 7.5 last week.