The order of them does not matter at all, as long as the sides are consistently opposite the angles with the corresponding letter (e.g. side "A" is always opposite angle "a").
Tangent (theta) is cosine / sine, or Y / X.Tangent (theta) is 40 / 58Theta = 34.6 degreesSince we are dividing cosine by sine, the hypotenuse does not matter as it cancels out.
The three angles inside every triangle, no matter what shape or size it is, always add up to 180 degrees.
If you are really talking about a closed triangle ABC, then the length of side "a" (given as 19) does not matter in the calculation. Sum of the angles of a triangle is 180 degrees. Angle B and C add up to 15 + 65 = 80 degrees. Hence angle A is (180 - 80) = 100 degrees
The theorem is a2+b2=c2 To explain, the legs of a triangle are labeled with a and b, but it doesn't matter which leg is labeled with which letter. The hypotenuse is always labeled with c. The theorem is that the sum of the two leg lengths squared is the square of the hypotenuse.
Sin2(theta) + cos2(theta) = 1 for the same reason that the sides of a right triangle squared equal the hypotenuse squared - The pythagorean theorem.In the unit circle (origin = (0,0), radius = 1), an angle theta is the angle made by some arbitrary ray drawn from the origin at an angle relative to the x axis. The point of that ray that intersects with the circle is the point (x,y).Sin(theta) is defined as x, and cos(theta) is defined as y. These are primary trigonometric identities, which link trigonometry with geometry.Since the points (0,0) (x,0) (x,y) (0,x) describe a right triangle, with (0,x) (0,0) (x,0) being the right angle, then x2 + y2 = 12, or sin2(theta) + cos2(theta) = 1.If this is not clear, draw a circle around the origin, draw a line from the center to an arbitrary point on the circle, and draw the x and y perpendiculars of that point to each axis. You will see a right triangle. X is sine, Y is cosine, and 1 is hypotenuse. It does not matter if X and/or Y is negative - the squaring will make it positive - and the pythagorean theorem should be visible.
R is before t-so Marvel. (alphabetically)
An upside-down triangle. It does not matter from which direction you view a triangle, it will still be a triangle.
No it does not matter.
Yes, it is true. This triangle is useful for schools. See the link below for a figure.
queens library
No matter how a triangle is described it will always have just three sides.
An equilateral triangle is a triangle that always looks the same no matter which of its three sides it's sitting on.
180 degrees. sum of every angle of triangle is always 180..no matter what type of triangle it is.
A scalene triangle has 3 sides, each with different lengths. the angles do not matter.
Yes, if all the sides on a triangle are the same length, it is regular, no matter what the orientation is.
You can pick any side to be the base. It doesn't really matter.
The three angles inside a triangle always add up to exactly 180 degrees,no matter what kind of a triangle it is.