# What is the cosine of 210?

Important Angle Summary
210°7π/6-√3/2
225°5π/4-√2/2
240°4π/3-1/2
270°3π/2

See full answer. Moreover, what is the exact value of cot 210?

Important Angle Summary

Similarly, what is the exact value of cos 225? The exact value of cos(225°) is -√(2) / 2.

People also ask, what is the exact value of sin 210?

## How do you find the value of cot?

The exact value of cot(60) is 1√3 . Multiply 1√3 by √3√3 . Combine and simplify the denominator. Multiply 1√3 1 3 and √3√3 3 3 .

What is the COT of 0 degrees?

In mathematics, any number divided by zero is undefined. Among the trigonometric ratios sin (°), cos (90°), tan (°) & cot (90°) are zeros. Their reciprocal ratios are indeterminate or undefined forms. Accordingly, cosec (°), sec (90°), cot (°) tan (90°) are indeterminate or undefined forms.

### What is the exact value of cot 120 degrees?

Important Angle Summary
120°2π/3-√3/3
135°3π/4-1
150°5π/6-√3
180°πN/A

### What is the cot of 270 degrees?

Important Angle Summary
270°3π/2N/A
300°5π/3-√3/3
315°7π/4-1
330°11π/6-√3

### What is the cot of 150 degrees?

Important Angle Summary
90°π/2N/A
120°2π/3-√3/3
135°3π/4-1
150°5π/6-√3

### What is the cot of 330 degrees?

Important Angle Summary

### What is the exact value of cot 7pi 4?

The exact value of cot4) cot ( π 4 ) is 1 . Multiply −1 by 1 .

### What CSC 330?

csc330=1sin330=1sin(7π4)=1−12=−2. As only cos and sec +ve in IV Quadrant.

### What is the exact value of sin 240?

sin (240) = sin (60 + 180) = – sin 60.

### How do you find COS 240?

1. 60∘ is an angle of one of the standard triangles with. cos(60∘)=12.
2. 240∘ is in the 3rd quadrant so (either by CAST or noting that the “x-side” of the associate triangle is negative) cos(240∘)=−cos(60∘)
3. cos(240∘)=−12.

### What is the secant?

[ sē′kănt′ ] A straight line or ray that intersects a curve, especially a circle, at two or more points. The ratio of the length of the hypotenuse in a right triangle to the side adjacent to an acute angle. The secant is the inverse of the cosine.

### What is COS 120 in radians?

Important Angle Summary