# Trig

Evaluate (if possible) the sine,cosine, and tangent of the angle

10pi/3

1. 👍 0
2. 👎 0
3. 👁 139
1. 10π/3 - 2π = 3π/2

then see

http://www.jiskha.com/display.cgi?id=1307390418

1. 👍 0
2. 👎 0
2. (10pi/3)rad * (1/2pi)rev/rad = 5/3 =
1 2/3 rev.
2/3 rev * 360deg/rev = 240 deg.

sin(240) = -0.8660 = -(sqrt3)/2.

cos(240) = -0.50 = -1/2.

tan(240) = 1.732 = sqrt3.

240 deg. = 4pi/3 rad.

1. 👍 0
2. 👎 0

## Similar Questions

1. ### Trig

Which trigonometric function can equal or be greater than 1.000? A Sine B Cosine C Tangent D none of the above

asked by Carl on December 13, 2011
2. ### Algebra II

Part 1: Using complete sentences, compare the key features and graphs of sine and cosine. What are their similarities and differences? Answer: The sine graph will always pass through (0, 0), While the cosine graph wouldn't. If the

asked by Man on May 25, 2014
3. ### Physics

A 100-kg box is suspended from two ropes; the left one makes an angle of 20degrees with the vertical, and the other makes an angle of 40degrees. What is the tension in each rope. I think I've got the basics: I have Fx=T1(x) +

asked by Stephanie on April 22, 2011
4. ### Trigonometry

(Triangle ABC is scalene) AC is a straight shore line and B is a boat out at sea. Angle A is 60 degrees and Angle C is 45 degrees. Find the shortest distance from the boat to the shore if A and C are 5km apart...I honestly have no

asked by Abby on January 28, 2015
1. ### Physics

A horse runs 15 m [N 23° E] and then 32 m [S 35° E]. What is the total displacement of the horse? I can't even visualise this... My friend told me the basic steps on how to solve it, but I got the wrong answer anyways... d1 = 15

asked by a Canadian on February 25, 2013
2. ### Math

1) use the half-angle formulas to determine the exact values of the sine, cosine, and tangent of the angle. 67 degrees and 30' Please explain!! I do not know how to start.

asked by Janet on March 1, 2010
3. ### Calculus

What is the best substitution to make to evaluate the integral of the quotient of cosine of 2 times x and the square root of the quantity 5 minus 2 times the sine of 2 times x, dx? u = sin(2x) u = cos(2x) u = 2x u = 5 − 2sin(2x)

asked by Anonymous on June 22, 2017
4. ### math

Which statement is ALWAYS true? A) The sine of an angle is equal to the sine of the angle's complement. B) The cosine of an angle is equal to the sine of the angle's supplement. C) The sine of an angle is equal to the cosine of

asked by Lauren on February 4, 2015
1. ### precalculus

write each expression as the sine, cosine or tangent of a double angle. then find the exact value of the expression. a. 2sin 22.5 cos 22.5 b. cos^2 105- sin^2 105

asked by ama on July 6, 2012
2. ### trig identities

cos94 degrees cos18 degrees+ sin94 degrees sin18 degrees. write the expression as the sine, cosine, or tangent of an angle.

asked by caitlyn on April 26, 2011
3. ### Physics

The drawing shows a plane diving towards the ground and then climbing back upward. During each of these motions, the lift force L acts perpendicular to the dispacement s, which has the same magnitude of 2.8 103 m in each case. The

asked by Mary on February 27, 2007
4. ### Pre-cal (Please Check)

1) Evaluate (if possible) the sine, cosine, and tangent of the angles without a calculator. a) 10pi/3 Sin = -sqrt 3/2 Cos = -1/2 Tan = sqrt 3 Are these correct ? I do not understand when to make them negative. b) 17pi/3 Sin =

asked by Hannah on February 10, 2010