## Trigonometric functions of "theta"

Trigonometric ratios and functions, the unit circle, inverse trig functions, identities, trig graphs, etc.
d0c
Posts: 1
Joined: Sat Nov 28, 2015 4:27 am
Contact:

### Trigonometric functions of "theta"

Find the trigonometric functions of "theta". The terminal side of "theta" passes through the given point.

(42, -12)

My issue is I have the answers which are represented as 7, 2, and, the square root of 53 but I am uncertain as to how one would reach these numbers. Please break down and explain

little_dragon
Posts: 226
Joined: Mon Dec 08, 2008 5:18 pm
Contact:

### Re: Trigonometric functions of "theta"

Find the trigonometric functions of "theta". The terminal side of "theta" passes through the given point.

(42, -12)

My issue is I have the answers which are represented as 7, 2, and, the square root of 53 but I am uncertain as to how one would reach these numbers.
ur supposed to find sin, cos, tan? (theres 3 other trig fcns so i'm asking)
x-axis, y-axis, terminal make 3 sides of a right triangle
do pythagorean thm to get length of hypotenuse (terminal side): sqrt[42^2+12^2]=sqrt[1908]=6sqrt[53]
then do ratios to get fcns