Trigonometry
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What is the union of two rays w/a common end point called?
Angle

One degree is equal to?
60' or 60 minutes

One minute is equal to?
60" or 60 seconds

360 degrees is equal to?
One revolution

What is the measure of an acute angle?
Between 0 and 90 degrees

What is the measure of a right angle?
Exactly 90 degrees

What is the measure of an obtuse angle?
Between 90 and 180 degrees

What is the measure of a straight angle?
Exactly 180 degrees

What is the measure of a reflex angle?
Between 180 and 360 degrees

1/2 Rotation counter clockwise=
1/2x360 = 360/2 = 180 degrees

2/3 Rotation clockwise=
2/3x360 = 720/3 = 240 degrees

3/4 Rotation counter clockwise=
3/4x360 = 1080/4= 270

5/8 Rotation counter clockwise=
5/8x360 = 1800/8=225 degrees

1 1/4 Rotation clock wise=
1 1/4x360 = 5/4x360 = 1800/8=450 or 1 rotation then stop at 90 degrees

3 5/8 rotation clockwise=
3 5/8x360 = 29/8x360 = 10440/8 = 1305 or 3 rotations then stop at 225

What is it called when a triangle has two equal sides?
Isosceles Triangle

What is it called when all three sides of a triangle are equal?
Equilateral triangle

What is a triangle with no equal sides called?
Scalene triangle

What is a scalene triangle?
A triangle with no equal sides

What is an Isosceles triangle?
A triangle with two equal sides

What is an equilateral triangle
A triangle with all sides equal

If a=95* and b=45* what is c?
 a+b+c=180*
 95*+45*+c=180*
 or
 180*(a+b)=c
 c=40*

If c is the right angle and b=40*20' then what is a=
 180*(c+b)=a
 180*(90*+40*20')=
 180*(130*20')=49*60'00"
 a=49*60'60"

Express the angle measure using degree, minutes and seconds.
10.5*
 10* + 0.5* (60'/1)
 10* + 30'
 10* 30'

Express the angle measure using degree, minutes and seconds.
13* 3 1/3'
 13* + 3' + 1/3' (60"/1')
 13* + 3' + 20"
 13* 3' 20"

Express the angle measure using degree, minutes and seconds.
42.72*
 42* + 0.72' (60'/1)
 42* + 43.2'
 42* + 43' 0.2 (60"/1)
 42* + 43' + 12"
 42* 43' 12"

Express 95* 45' 45" in decimel degrees
60 minutes in one degree
3600 seconds in one degree
 95* 45' 45"
 95* + 45' (1/60) + 45" (1/3600)
 95* + .75* + 0.0125*
 95.7625*

Express 28* 18' 36" in decimel degrees
 28* + 18' (1*/60") + 36 (1*/3600")
 28* + .30* + 0.0100*
 28.3100*

Convert degrees to radians multiply the given degree measure by?
Radian/180*

Convert degrees to radians.
60*
60* (Rad/180*) = 1/3 Radians

Convert degrees to radians.
35*
35* (rad/180*) = 35rad/180* = 7rad/36