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On the unit circle, at 30 degrees the point is ( sqrt(3)/2 , 1/2 )
Cosine "represents" the x value (x, y)
Therefore:
cos(30) = sqrt(3) / 2
It is highly advisable for you to memorize the unit circle -- at least the quadrant I angles (0, 30, 45, 60, and 90). I'll include a link to a good unit circle reference in the related links.
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∙ 11y ago
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What is the cosine of a 59 degree angle?
cosine(59 degrees) = 0.51504 (rounded)
What is the cosine of a 50 degree angle?
cos(50) = 0.6428 (rounded)
What's the takeoff for a 30 degree angle?
The takeoff for a 30 degree angle will depend with the offset angle.
Is a 30 degree angle and a 30 degree angle congruent?
Yes and they are both acute angles
What is the relevance of the number 1.414 to a 45 degree angle?
The number 1.414... (square root of 2) is two times the cosine or sine of a 45 degree angle. The reason for this is that for a 45 degree angle, the two sides are cosine and sine, they are equal, and if you solve using the Pythagorean theorem with a hypotenuse of 1, the two sides are each (21/2)/2.
What is the cosine of a 30 degree angle?
As a decimal: 0.866 As a fraction: √(3)/2
What is the cosine of a 60 degree angle?
Cosine is 0.5
What is the cosine of a 59 degree angle?
cosine(59 degrees) = 0.51504 (rounded)
What angle is Sine and cosine equal?
at a 45 degree angle, or pi/4
At what angle measure are the sin and the cosine equal?
45 degree
What is the cosine of a 50 degree angle?
cos(50) = 0.6428 (rounded)
What is the length of the side opposite the 30 degree angle?
It depends on the length of the other two sides which creates that angle. Not enough information was given. However, you can simply use the Cosine rule to find it if the other two lengths are known. a2=b2+c2- 2bccosA (A=30 and a is the length of the side opposite to 30 degree angle; b and c is the length of the sides which makes up the 30 degree angle)
Show you a 30 degree angle?
30 degree angle
What is the cosine of a 65 degree angle?
Cos(65 deg) = 0.4226 approx.
Is a 30 degree angle congruent to a 30 degree angle?
Yes.
How is a 30 degree angle related to a 60 degree anlge?
a 60 degree angle is twice the size of a 30 degree angle.
What's the takeoff for a 30 degree angle?
The takeoff for a 30 degree angle will depend with the offset angle.
