**Given cos x=2/3 and 3pi/2**

, we have sin45 ° = 2 2 and cos45 ° = 2 2. From the equilateral (60-60-60) triangle with all legs of length 1, we can view half the triangle, forming a 30-60-90 triangle, with the hypotenuse measuring 1, the short leg 1/2, and the long leg 3 2.... 25/02/2011 · The trick to find Trigonometric Function at Main Angles and Unit Circle - long version (part1) - Duration: 10:03. MisterEducationTV 11,114 views

**How do you find the exact value of sin((2pi)/3)? Socratic**

, we have sin45 ° = 2 2 and cos45 ° = 2 2. From the equilateral (60-60-60) triangle with all legs of length 1, we can view half the triangle, forming a 30-60-90 triangle, with the hypotenuse measuring 1, the short leg 1/2, and the long leg 3 2....Explain how to find the exact value of sin(570°). - 3248472 1. Log in Join now 1. Log in Join now Sin function is a periodic function with period 2pi (360°). That's mean sin x = sin(x+360°) or generally: sin x = sin(x+360k°) (k is an integral) sin(570°) = sin(210°+360°) = sin(210°) Then use a formula sin(x+180°) = -sin x So then: sin(210°) = sin(180°+30°) = -sin(30°) It has

**Finding the exact value of cos[sin^-1(2/3)+2sin^-1(- 1/3**

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## How To Find Exact Value Of Sin 2pi 3

### need help finding the exact value of sin((4pi)/7)cos

- trigonometry How do I find the exact value of cot theta
- SOLUTION Please help give exact value of sin 2pi/3
- The exact value of sin 2pi/3 can be written as aâˆšb/c
- sin^-1(cos(2pi/3)) YouTube

## How To Find Exact Value Of Sin 2pi 3

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- 26/02/2014 · Complex roots can be used to calculate the exact trigonometric value for unusual angles; for example cos(2?/5) and sin(2?/5). Choosing z 5 =1 will produce five complex roots aligned as shown in the first diagram.
- use the given conditions to find the exact value of the expression: sin(a)=(-5/13), tan(a)> 0, sin[a-(2pi/3)
- 2*pi is one complete revolution, i.e. 360 degrees. Sin of 2*pi = sin 360? = 0.
- 18/05/2010 · Keep moving to 4pi/3 and 5pi/3. 6pi/3 is the same as 2pi, and it falls in the exact same location as 0 because you completed the circle. I you keep counting, 7pi/3 will fall in the same location as pi/3. 8pi/3 comes next and falls with 2pi/3.

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