What is half ab sin C?
What is half ab sin C?
A Trigonometric Formula for the Area of a Triangle: The area of a triangle can be expressed using the lengths of two sides and the sine of the included angle. AreaΔ = ½ ab sin C. You may see this referred to as the SAS formula for the area of a triangle.
What is sin a and sin C?
Simply, it states that the ratio of the length of a side of a triangle to the sine of the angle opposite that side is the same for all sides and angles in a given triangle. In ΔABC is an oblique triangle with sides a,b and c , then asinA=bsinB=csinC .
What is an oblique triangle?
An oblique triangle is any triangle that is not a right triangle. It could be an acute triangle (all threee angles of the triangle are less than right angles) or it could be an obtuse triangle (one of the three angles is greater than a right angle).
What are the two kinds of oblique triangle?
There are two types of oblique triangles: an acute triangle has all acute angles, and an obtuse triangle has one obtuse angle.
What is the triangle sum theorem?
The sum of interior angles is 180 degrees (Triangle Angle Sum Theorem). All interior angles of a triangle are more than 0° but less than 180°. The sum of each interior angle and exterior angle is equal to 180° (straight line).
What triangle is 180?
right triangle
What is a supplement of 100 degrees?
An angle measuring 100 degrees would be supplementary to any angle measuring 80 degrees, but it cannot be called supplementary by itself. Two angles are called supplementary (to each other) if they add up to 180 degrees.
Is a straight line 360 degrees?
Angles are measured in degrees, written °. The maximum angle is 360°. This is the angle all the way round a point. Half of this is the angle on a straight line, which is 180°.
Is a straight line always 180 degrees?
We’ve already said that a straight line contains 180 degrees. This means that if two or more angles lie in a straight line, the sum of their angles is 180 degrees. If the two angles add up to 180, then they are called supplementary. Two angles on a straight line are always supplementary.
What degree is a triangle?
180 degrees