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what is the opposite of obtuse angle

There is no opposite to a right angle, as a right angle is just a term defining 90 degrees. A left angle! Therefore, an obtuse-angled triangle can never have a right angle; and vice versa. THE LAW OF SINES. One of the sides of this square coincides with a part of the longest side of the triangle.
T HE LAW OF SINES allows us to solve triangles that are not right-angled, and are called oblique triangles. If angle A measures 100 degrees, then angle B, its opposite, will also measure 100 degrees. Alternate exterior angles.

A triangle cannot be right-angled and obtuse angled at the same time.

This means that the two angles combined equals 200 degrees. Since every triangle has a measurement of 180 degrees, a triangle can only have one obtuse angle. See also acute, angles, right, straight. It does not come up in calculus. Statement of the law of sines. The longest side of an obtuse triangle is the one opposite the obtuse angle vertex. The vertex of an obtuse angle is "dull" when compared with the vertex of an acute angle. Adjacent. Angle. The sine of an obtuse angle.

Since a right-angled triangle has one right angle, the other two angles are acute.
You can calculate an obtuse triangle using the lengths of the triangle's sides. Obtuse angled triangles in real life: Acute. Obtuse comes from a Latin word meaning blunted or dull (the opposite of acute or sharp). An obtuse triangle may be either isosceles (two equal sides and two equal angles) or scalene (no equal sides or angles). Proof of the law of sines This is a topic in traditional trigonometry. The ambiguous case. The side opposite the obtuse angle in the triangle is the longest. Obtuse triangles, also referred to as oblique triangles, can be recognized by their having a single significantly larger angle and two smaller angles. An obtuse triangle has only one inscribed square.

Here you see what is known as the unit circle, which defines the x and y values at a degree/ radian on a circle with a radius of 1. It states the following: Obtuse angle definition, an angle greater than 90° but less than 180°.

For each angle you find, write down the name of the streets that intersect and measure the angle with a protractor to confirm it is an obtuse angle. See more.