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What is cos 30?

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Anonymous

12y ago
Updated: 4/28/2022

cos(30 = 0.8660254038

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12y ago

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Related Questions

What is this expression as the cosine of an angle cos30cos55 plus sin30sin55?

cos(30)cos(55)+sin(30)sin(55)=cos(30-55) = cos(-25)=cos(25) Note: cos(a)=cos(-a) for any angle 'a'. cos(a)cos(b)+sin(a)sin(b)=cos(a-b) for any 'a' and 'b'.


What is cos 30 degrees?

Cos(30) = sqrt(3)/2


What is the cosine of 30?

Cos(30) = sqrt(3)/2 = 0.866025403..


What is the cos of 30?

0.866


What is cos 30 in a fraction?

cos(30) is an irrational number and so cannot be expressed as a rational fraction. It is (√3)/2.


Sin30 cos90 sin 90 cos30?

To simplify the expression sin(30°) cos(90°) sin(90°) cos(30°), we first evaluate the trigonometric functions at the given angles. sin(30°) = 1/2, cos(90°) = 0, sin(90°) = 1, and cos(30°) = √3/2. Substituting these values into the expression, we get (1/2) * 0 * 1 * (√3/2) = 0. Therefore, the final result of sin(30°) cos(90°) sin(90°) cos(30°) is 0.


Why is sine 30 the same as cosine of 60?

sin(30) = sin(90 - 60) = sin(90)*cos(60) - cos(90)*sin(60) = 1*cos(60) - 0*sin(60) = cos(60).


What is Cos 15?

The cosine of 15 degrees can be calculated using the cosine subtraction formula: ( \cos(15^\circ) = \cos(45^\circ - 30^\circ) ). This gives us ( \cos(15^\circ) = \cos 45^\circ \cos 30^\circ + \sin 45^\circ \sin 30^\circ ). Plugging in the known values, ( \cos 45^\circ = \frac{\sqrt{2}}{2} ), ( \cos 30^\circ = \frac{\sqrt{3}}{2} ), ( \sin 45^\circ = \frac{\sqrt{2}}{2} ), and ( \sin 30^\circ = \frac{1}{2} ), we find that ( \cos 15^\circ = \frac{\sqrt{6} + \sqrt{2}}{4} ).


What is a cos 30?

Root 3 over 2.


What is the cofunction of sin 30 degree?

cos 60


What is 7 x 60 x cos 60 equals?

cos(60) = 0.57 x 60 x cos(60) = 7 x 30 = 210


What is cos 510 degrees.. Not it decimal form but by using a fraction including any radicals if necessary?

510 ~ (510-360) ~ 150 Cos 510 = Cos 150 = - Cos 30 = - ( radical 3 ) / 2