Question

trig - math 154 problem, pleeeeeease help

Answer 1

anyone help, i need to know this for an upcoming quiz.... need help please... thank you sooooo much

Answer 2

a) Draw the x-y coordinates on the graph.
Locate the point (-4,3) by going 4 units to the left along the negative x axis and 3 units up along the positive y-axis. Set the radius of the compass to the distance between the origin and the point you just plotted. With the origin as the center, draw a circle passing through the point. Join the origin and the point. Mark the angle between this line and the positive x-axis as theta.

Answer 3

b) The equation for a circle with the origin as the center is:
x^2 + y^2 = r^2
Since this circle passes through the point (-4,3) it must satisfy the above equation. Put x = -4 and y = 3 into the above equation and solve for r which will be the radius of the circle.

Answer 4

c) Since the point is in the second quadrant (because x is negative and y is positive), sine will be positive, cosine will be negative and tangent will be negative. Using the reference angle, find sine as opposite / hypotenuse. Find cosine as adjacent / hypotenuse but put a negative sign in the front. Find tangent as opposite / adjacent with a negative sign in the front.

Answer 5

oh, thank you.... what about the sketch, do I draw a circle... can you upload a picture please of the sketch

Answer 6

I'm not sure whether I sketched the right angle correctly... the Hyp is 5 right,