What is the value sin 240?

The value of cos 240 degrees is -0.5. Cos 240 degrees in radians is written as cos (240° × π/180°), i.e., cos (4π/3) or cos (4.188790. . .).

What is the value sin 240?

Sin 240 degrees is the value of sine trigonometric function for an angle equal to 240 degrees. The value of sin 240° is -(√3/2) or -0.866 (approx).

What is the exact value of tan 240?

Tan 240 degrees is the value of tangent trigonometric function for an angle equal to 240 degrees. The value of tan 240° is √3 or 1.7321 (approx).

What is the cot of 240 degrees?

Cot 240 degrees is the value of cotangent trigonometric function for an angle equal to 240 degrees. The value of cot 240° is 1/√3 or 0.5774 (approx).

Is Cos 240 positive?

Note: Since 240° lies in the 3rd Quadrant, the final value of cos 240° will be negative.

How do you find tan 240 without a calculator?

Explanation: Knowing that, tan(180+x)∘=tanx∘ , we find, tan(240∘)=tan(1802+60∘)=tan60∘=√3 .

What is the tan 150o )?

Tan 150 degrees is the value of tangent trigonometric function for an angle equal to 150 degrees. The value of tan 150° is -1/√3 or -0.5774 (approx).

What is the sin of 270?

sin(270)=−1. Hence, sin(270)=−1.

How do you find cot 225?

The cot of 225 degrees equals the x-coordinate(-0.7071) divided by y-coordinate(-0.7071) of the point of intersection (-0.7071, -0.7071) of unit circle and r.

What is the exact value of cos 135?

The value of cos 135° is equal to the x-coordinate (-0.7071). ∴ cos 135° = -0.7071.

What is the sin PI 4?

What is Sin pi/4? Sin pi/4 is the value of sine trigonometric function for an angle equal to pi/4 radians. The value of sin pi/4 is 1/√2 or 0.7071 (approx).

What is the cot of 270?

Cot 270 degrees is the value of cotangent trigonometric function for an angle equal to 270 degrees. The value of cot 270° is 0.

Why is cos240 negative?

Trigonometry Examples

Make the expression negative because cosine is negative in the third quadrant.

What is the exact value of cos?

Answer: The exact value of cos (150∘) is −√3/2 and sin (150∘) is 1/2.

How do you find the reference angle?

So, if our given angle is 110°, then its reference angle is 180° – 110° = 70°. When the terminal side is in the third quadrant (angles from 180° to 270°), our reference angle is our given angle minus 180°. So, if our given angle is 214°, then its reference angle is 214° – 180° = 34°.