# pre calc need help

posted by .

Find the indicated function value. Do not use a calculator.

tan 180 degrees

• pre calc need help -

think of a rotating arm of length 1 rotating about the origin (0,0)

at 180º the end of the arm will land on (-1,0)

tan (theta) = y/x
tan 180 = 0/-1 = 0

## Similar Questions

1. ### calculus

I need help on finding the local linear approximation of tan 62 degree. i got 1.77859292096 can someone check if i got it right?
2. ### tan x = 1/2

Can someone tell me what the radian value is for this number and how they got it?
3. ### Trig

Can someone check my answers so far? 1. Find the exact value of tan(-3ð) Answer: tan(-3ð) = tan (-3 + 2ð) = tan (-ð) = tan (-ð + 2ð) = tan(ð) = sin (ð)/cos(ð) = (0)/(-1) = 0 Exact value is 0 2. Solve triangleABC is C = 90
4. ### Pre Calc.

Use the sum or difference identity to find the exact value of sin255 degrees. My answer: (-sqrt(2)- sqrt(6)) / (4) Find the value of tan (alpha-beta), if cos alpha= -3/5, sin beta= 5/13, 90<alpha<180, and 90<beta<180. My …
5. ### Pre Calc

use properties of the trigonometric function to find the exact value of each expression. Do no use a calculator. sec ( - pi/18) * cos (37 pi)/18 I do not see how to do this problem. Every time I do it out I get a reference angle of …
6. ### PRE CALC

1. solve tan36 degrees- tan2degrees/ 1+tan36 degrees tan 2 degrees as a single function. 2. Find the exact value of sin (α-β) if sina=4/5 and cos β= -9/41 terminal side of α lies in I and terminal side of β …
7. ### Calculus

Find the exact values of the following. cos 270 degrees = 90 degrees, value = 0. Sin 180 degrees = 180-90 = 90 = 1, but its supposed to be zero, don't know how to get that:\ Confused with tan 240 degrees as well.
8. ### pre-calc

cosx= -8/17, 180<x<270 find sin x/2= cos x/2= tan x/2=
9. ### Pre-calc

Let p(x,y) be a point on the graph of y= X^2-3 A) Express the distance from P to the point (1,2) as a function of x. Simplify completely. B) Use your calculator to determine which value of x-yields the smallest d.
10. ### Pre-Cal

Use an Addition or Subtraction Formula to write the expression as a trigonometric function of one number. (tan(74°)-tan(14°))/(1+tan(74°)tan(14°)) =__________ Find it's exact value (not decimal form) =__________ Note: A similar …

More Similar Questions