find the side
b= 16 c= 20 find a
12
to find the angle measure in a right triangle, use the __________________ sine, cosine, or tangent.
inverse
a relationship comparing two quantities as 1:2, 1 to 2, 1/2
ratio
abbreviation for sine
sin
what's SOH CAH TOA used for?
to memorize trig ratios
a=3 c=5 find b
4
Two angles that add up to 90 degrees
complementary Angles
when simplified, they are equal (ex. 2/4 = 1/2)
equivalent ratios
abbreviation for cosine
cos
The branch of mathematics dealing with the relations of the sides and angles of triangles and with the relevant functions of any angles.
Trigonometry
a=7 c=25 find b
24
Two angles that add up to 180 degrees
supplementary Angles
sin 30°
1/2
abbreviation for tangent
tan
what is the longest side of the tiangle?
hypotenuse
a=3 b=4 find c
5
what is the measure of each exterior angle of a regular octagon?
45
the side opposite to the right angle
hypotenuse
what is cos?
adjacent over hypotenuse
A greek symbol commonly used to represent an unknown angle
Theta
a=7 b=24 find c
25
A ladder 500 cm long leans against a building. If the angle between the ground and the ladder is 57 degrees, how far from the wall is the bottom of the ladder? round to the nearest tenth.
272.3
if the opposite is 5 and the adjacent is 3 what is cos(x)?
3/5
what is tan?
opposite over adjacent
what is a²+b²=c²
pythagorean theorem