Radian and degree meaure
_________________means "measurement of triangles"
What is Trigonometry?
One half revolution is equal to this
What is 180 degree or pi?
sin and csc, cos and sec, tan and cot are what to each other
What is reciprocal?
the quotient identities are these
What is sin/cos=tan and cos/sin=cot
What do you call the acute angle formed by the terminal side of an angle in standard position and the horizontal axis?
What is a reference angle?
a (n)__________is determined by rotating a ray about it's endpoint?
What is an angle?
The sum of two complementary angles are equal to this
What is 90 degrees or pi?
Complementary angles and their cofunctions are this
What is equal?
Relative to the acute angle, the three sides of the right triangle are called these
What is hypotenuse, opposite and adjacent?
sec is positive in these quadrants
What is 1 and 4?
An angle with it's inital side coinciding with the positive x-axis and the origin as it's vertex is said to be in this
What is standard position?
The angles 315 degrees and -225 are or are not considered coterminal
What is are not?
This acronym is used to remember right triangle trig
What is "SOHCAHTOA"
The angle that measures from the horizontal upward to an object is call the angle of _______________
What is elevation?
Sin is equal to 0 at this/these angles
What is 0 and pi?
Two angles that have the same initial and terminal sides are this
What is coterminal?
a (n)__________is determined by rotating a ray about it's endpoint?
What is an angle?
tan x is undefined at these points of the unit circle
What is pi/2 and 3pi/2?
An angle that measures from the horizontal downward to an object is called the angle of _______________
What is depression?
The cos 25 is equal to the sine of this angle
What is 65?
One ___is the measure of a central angle that intercepts an arc equal in length to the radius of a circle
What is radian?
Angle 2pi/3 is this type of angle
What is obtuse?
When x=0, these trig functions are undefined
What is tan and sec?
sin 60 and cos 30 are equal for this reason
What is "complementary angles have equal cofunctions?
Tan >0 and csc < 0 in this quadrant
What is 3?