Right Triangle Trig
True or False: the equation for sine when using right triangle trig is sin=adjacent over the hypotenuse?
False The equation is sin= opposite over hypotenuse.
True or False: the angle needed to properly use the law of cosine is the angle that is in between the two sides being used?
True
True or False: when using trig to find the area of a parallelogram, the equation is A=absinc
True
True or False: vertical angles are never congruent?
False, vertical angles are always congruent.
The abbreviation of tan stands for what?
The abbreviation stands for the tangent.
The angle of depression and the angle of elevation are always..?
The angle of depression and the angle of elevation are always "equal"
Cofunctions of.....?
Cofunctions of "complementary angles are equal."
Alternate interior angles are always "..."?
Alternate interior angles are "congruent,"
What is the equation to find the cosine of something?
cosine= adjacent over hypotenuse
In order to use the law of sines, what would one need?
One would either need two angles and one side or two sides and one angle. The other angle or side would be the thing value that one would find.
Is sine, cosine, or tangent used in the formula for the area of a non-right triangle?
Sine is used
A triangle with three sides with different values per side is called a?
It is called a scalene triangle.
The angle of elevations and the angle of depression are always...?
They are always congruent.
In order to use the law of cosines, one would need?
One would need two sides and an included angle to use the law of sines or three sides.
When there is an unknown value while using cofunctions it is called?
It is called Theta.
Rigid motions preserve...?
Rigid motions preserve "distance and angle measure"
Define the hypotenuse of a right triangle
The hypotenuse of a right triangle is the longest side of the triangle and is the side opposite the right angle in the triangle.
State the formula for the Law of Cosines.
x2=leg2*leg2-2*leg*leg*cos included angle
In order to figure out the area of a non-right triangle how many sides does one need?
One would need two sides to find the area of a non-right triangle.
HLLS and SAS can only be used when an "...." is present.
HLLS and SAS can only be used when an "altitude" is present.