0
A half angle is just what it sound like; it's half the measure of an angle. If you have an angle of 30 degrees, the half angle is 15 degrees. Simple and easy. Where it comes in handy is in construction of something like, say, an isosceles triangle inside a circle. If you have the two equal equal angles, you can find the third angle. Then you can construct it by drawing a chord across the circle through its diameter, then using the half angle to draw in one side. Repeating the process on the other side of the diameter will give you the other side of the triangle. By drawing in a chord connecting the points where the other two chords (drawn off the half angles on either side of the diameter) intersect the circle, you'll have completed the construction of the isosceles triangle.
Add your answer:
Earn +20 pts
What is half of a straight angle called?
A straight angle is 180 degrees so half of that is 90 degrees of a right angle.
What segment cuts a angle in half?
Angle Bisector.
A ray that divides an angle in half is called?
Answer: Angle bisector
What is the degree measure of one half of right angle turn?
A right angle is 90 degrees, so 45 degrees is half a right angle turn.
What is the half angle formula?
The half angle formula is: sin theta/2 = ± sqrt (1 - cos theta/2)
Does a bisector cut an angle in half?
To bisect an angle is to divide the angle in half.
What is the measurement of an angle that is half as large as the other angle?
The first angle that is half as large as the other angle is 30º The other angle that is the larger is 60º
One half of a right angle turn?
One half of a right angle is a 45 degree angle.
What is double angle and half angle?
Double angle and half angle in mathematics refer to the formulas used to express trigonometric functions of angles equal to 2a or 1/2a. These are known as the double-angle and half-angle formulas.
How can half angle identities help solve nonspecial angle measures?
15 degrees is not a special angle, but it is half of 30, which is a special angle. If you need sin 15 you can use the half angle formula with 30 degrees.
What is half of a straight angle called?
A straight angle is 180 degrees so half of that is 90 degrees of a right angle.
A segment that cuts an angle in half?
A bisector is a ray or segment which cuts an angle in half.
What divides an angle exactly in half?
A bisector divides an angle in half (usually in the form of a line passing through the centre of the angle).
What segment cuts a angle in half?
Angle Bisector.
What is a line that divides an angle in half?
Angle bisector
What divides angles and line segments in half?
An angle is divided in half by the angle bisector. A line segment is divided in half by a midpoint.
What describes an angle bisector?
An angle bisector is a line that divides an angle in half.
