Contents
What is an exact value?
Exact value is where you cannot estimate the value you must be precise, eg; you can’t estimate something as being around about 5 centimetres; no you need an exact value such as 5.62.
What is the exact value of sin105?
0.9659
Sin 105 degrees is the value of sine trigonometric function for an angle equal to 105 degrees. The value of sin 105° is (√6 + √2)/4 or 0.9659 (approx).
How do you find the exact value of sin 570?
The value of sin 570 degrees can be calculated by constructing an angle of 570° with the x-axis, and then finding the coordinates of the corresponding point (-0.866, -0.5) on the unit circle. The value of sin 570° is equal to the y-coordinate (-0.5). ∴ sin 570° = -0.5.
What is the exact value of cos 75?
The exact value of cos(75) is √6−√24 6 – 2 4 .
What is the exact value of cos 45?
1/√2
The exact value of cos 45 degrees is 1/√2 (in surd form), which is also equal to sin 45 degrees. It is an irrational number, equal to 0.7071067812… in decimal form. The approximate value of cos 45 is equal to 0.7071.
How do you find COS 390 without a calculator?
The value of cos 390° is equal to the x-coordinate (0.866). ∴ cos 390° = 0.866.
What’s the exact value of cos pi over 3?
The value of cos pi/3 is 0.5.
How do you write Cosecant?
Cosecant (csc) – Trigonometry function
In a right triangle, the cosecant of an angle is the length of the hypotenuse divided by the length of the opposite side. In a formula, it is abbreviated to just ‘csc’.
What is the exact value of cos 195?
-0.9659258
The value of cos 195 degrees is -0.9659258. . .. Cos 195 degrees in radians is written as cos (195° × π/180°), i.e., cos (13π/12) or cos (3.403392. . .).
What is the exact value of cos 60º )?
The exact value of cos(60°) cos ( 60 ° ) is 12 .
What is the exact value of cos 105?
The value of cos 105 degrees in decimal is -0.258819045. . .. Cos 105 degrees can also be expressed using the equivalent of the given angle (105 degrees) in radians (1.83259 . . .) ⇒ 105 degrees = 105° × (π/180°) rad = 7π/12 or 1.8325 . . . ∴ cos 105° = cos(1.8325) = -(√6-√2)/4 or -0.2588190. . .
How do you find the value of sin 57?
The value of sin 57° is equal to the y-coordinate (0.8387). ∴ sin 57° = 0.8387.
How do you find the value of sin 660?
The value of sin 660° is equal to the y-coordinate (-0.866). ∴ sin 660° = -0.866.
What is the exact value of cos 570?
-0.8660254
The value of cos 570 degrees is -0.8660254. . .. Cos 570 degrees in radians is written as cos (570° × π/180°), i.e., cos (19π/6) or cos (9.948376. . .).
What is the exact value of cos 15?
Answer: The value of cos 15° = (√3+1)/2√2.
What is the exact value of cos 30?
√3/2
Cos 30° = √3/2 is an irrational number and equals to 0.8660254037 (decimal form). Therefore, the exact value of cos 30 degrees is written as 0.8660 approx. √3/2 is the value of Cos 30° which is a trigonometric ratio or trigonometric function of a particular angle.
How do you find the value of cos 80?
How to Find the Value of Cos 80 Degrees? The value of cos 80 degrees can be calculated by constructing an angle of 80° with the x-axis, and then finding the coordinates of the corresponding point (0.1736, 0.9848) on the unit circle. The value of cos 80° is equal to the x-coordinate (0.1736). ∴ cos 80° = 0.1736.
What is the exact value of cos 180?
-1
What is the Exact Value of cos 180 Degrees? The exact value of cos 180 degrees is -1.
What is value of sin30?
The value of sin 30 degrees is 0.5. Sin 30 is also written as sin π/6, in radians. The trigonometric function also called as an angle function relates the angles of a triangle to the length of its sides.
What is the exact value of cos 90?
The exact value of cos(90) is 0 .