Table of Contents
What is the exact value of sin300?
0.866
The value of sin 300° is equal to the y-coordinate (-0.866). ∴ sin 300° = -0.866.
How do you find sin 240 without a calculator?
Explanation: For sin 240 degrees, the angle 240° lies between 180° and 270° (Third Quadrant). Since sine function is negative in the third quadrant, thus sin 240° value = -(√3/2) or -0.8660254. . .
How do you find sin 210 without a calculator?
Starts here1:39sin210 | sin(210)| sine of 210 degree | First Method – YouTubeYouTubeStart of suggested clipEnd of suggested clip56 second suggested clipIn this video we will learn to find the value of sine of 210 degree as 210 degree is equal to 180MoreIn this video we will learn to find the value of sine of 210 degree as 210 degree is equal to 180 degree plus 30 degree. So sine of 210. Degree is equal to sine of 180 degree plus 30 degree.
In which quadrants is cosine positive?
Sine and cosecant are positive in Quadrant 2, tangent and cotangent are positive in Quadrant 3, and cosine and secant are positive in Quadrant 4.
What is the value of Cos 2nπ?
1
So, for any number of a complete rotation say n, the value of cos will always remain equal to 1. Hence, cos 2nπ = 1.
What is the value of 240?
Trigonometric Function Values of Special Angles
| θ° | θradians | sin(θ) |
|---|---|---|
| 210° | 7π/6 | -1/2 |
| 225° | 5π/4 | -√2/2 |
| 240° | 4π/3 | -√3/2 |
| 270° | 3π/2 | -1 |
How do you find the exact value of cos 240?
FAQs on Cos 240 Degrees The value of cos 240 degrees can be calculated by constructing an angle of 240° with the x-axis, and then finding the coordinates of the corresponding point (-0.5, -0.866) on the unit circle. The value of cos 240° is equal to the x-coordinate (-0.5). ∴ cos 240° = -0.5.
What is the exact value of 210?
Trigonometric Function Values of Special Angles
| θ° | θradians | cos(θ) |
|---|---|---|
| 180° | π | -1 |
| 210° | 7π/6 | -√3/2 |
| 225° | 5π/4 | -√2/2 |
| 240° | 4π/3 | -1/2 |
What is the value of sin 210 degrees in fraction?