How do you find COS 120 in a fraction?
Answer: The value of cos 120° degree is -1/2.
What is the exact value of tan 120?
– √3
Answer: tan 120°= – √3.
What is the formula of COS 120 degree?
Cos 120 degree is equal to minus half which can be written as (- ½ ) or (-0.5). Cos is one of the functions of Trigonometry that deals with the relationship between the angles and sides of a right-angled triangle.
What fraction is cos 135?
The value of cos135 is −1√2 .
Why are sin 60 and sin 120 the same?
The sin 120-degrees value can be identified using either unit circle or with the help of other trigonometric angles such as 60, 180 degrees and so on. By looking at the diagram given above, the value of sin 60 is equal to the value of sin 120. It means that, sin 60 = sin 120 = √3/2.
How do you evaluate sin 120?
Another method to derive the value of sine 120 degrees is by using cosine functions. With the help of the trigonometry formula, sin (90 + a) = cos a ,we can determine sin 120 exact value. As we know, sin (90° + 30°) = Sin 120 degrees. Hence, sin 120 degree = cos 30°.
Why is sin 60 and sin 120 the same?
How do you evaluate COS 120?
The value of Cos 120⁰ is – ½. It is the additive inverse of the value of cosine 60⁰ or cos 60⁰. Cosine is one of the basic trigonometric functions.
What is the value of Cosec 120 degree?
csc 120° = csc (1 × 90° + 30°) = sec 30° = 2√3; sec 120° = sec (1 × 90° + 30°) = – csc 30° = – 2; tan 120° = tan (1 × 90° + 30°) = – cot 30° = – √3; cot 120° = cot (1 × 90° + 30°) = – tan 30° = – 1√3.
What is cos 120 degrees?
Cos 120 degrees has a reference angle of 60 degrees and it is located in Quadrant II. Since the reference angle is 60 degrees it will have the same cos as 60 degrees in Q I. Cos 60 = 1/2. In Q II cos is negative so Cos 120 = -1/2.
What is sin of 120 degrees?
120 degrees is in the Quadrant 2 meaning it is in the “S” quadrant AKA where Sin is positive, Cos is negative, & Tan is negative. Then I used the 30°-60°-90° triangle rule to find my lengths and ratios for sin, cos and tan!
What is sin of 120?
If you are asking value of sin 120 where angle is in radians, it’s equal to 0.5806. But in degrees it’s sin 120=(✓3)/2. There is a simple thumb rule for this.
What is the sine of 1 degree?
“sin 1” is the value of sine function at 1 radiant i.e.57.32 degree and other one is its value at 1 degree.