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# Find the Exact Value sin2pi/3 Mathway.

Find the Exact Value sin2pi/3 Apply the reference angle by finding the angle with equivalent trig values in the first quadrant. The exact value of is. What is the value of sin -45^@? How do you find the trigonometric functions of values that are greater than 360^@? How do you use the reference angles to find sin210cos330-tan 135? Trigonometry Angles--Pi/3. Construction of the angle produces a 30-60-90 triangle, which has angles and. From the above diagram, write for the vertical leg, then the horizontal leg is given by. sin pi/2 =1 sin 3 pi/2 is negative 1 it is in 3rd quadrant where sin is negative. 14/12/2008 · Remember that pi is equal to 180 degrees and 2pi is 360 degrees. So, this one is 360/3 or 120 degrees. This angle is in the 2nd quadrant and the angle of reference always from the x axis is 60 degrees. The sin of 60 is the square root of 3 over 2. And, since it's in the 2nd quadrant, it is positive.

24/02/2011 · For the Love of Physics - Walter Lewin - May 16, 2011 - Duration: 1:01:26. Lectures by Walter Lewin. They will make you ♥ Physics. Recommended for you. This question can be solved using the unit circle. 1. Convert radians to degrees: 4π/3 × 180/π= 240º 2. 240º is in the 3rd quadrant, so we subtract 180 to get the reference angle: 240–180= 60º. 3. Based on 30–60–90 right triangle, the sin of 6. 19/10/2007 · Understand that PI radians is EQUIVALENT to 180 degrees, which means that PI/2 equals 90 degrees. I assume you know what a sine graph looks like. In that case, draw two sine graphs, one will use degrees, and the other will use pi. Compare the two and you will see that. sin 90 = sin pi/2 = 1. 10/06/2009 · I have a math exam soon, and im having difficulties remembering how to do this Find the exact value: a sin Pi/3 b cos 2Pi/3 c sin 5Pi/4 d tan 5Pi/6 these are a few questions from my review package. can someone please explain to me how to do it? im not interested in just the answer, i want to see the process and how to do.

## what is sin2pi/3 equal to? Yahoo Answers.

sin n pi = 0,where n=0,1,2,3. Hence sin2 pi = 0. cos 3pi x/3 = 0.5 The number of answers depends on the range of angles. I will solve this question using the range 0