4. Trigonometry 1 Flashcards
1
Q
Sin (x)?
righ angle triangle
A
2
Q
Cos (x)?
righ angle triangle
A
3
Q
Tan (x)?
righ angle triangle
A
4
Q
tan (45º)
exact value of 45º triangle
A
5
Q
cos (45º)
exact value of 45º triangle
A
6
Q
sin (45º)
exact value of 45º triangle
A
7
Q
Sides of a 45º triangle
A
8
Q
what are radians?
A
size of angle, a way to measure them.
9
Q
pythagoras theorem
A
10
Q
trigonometry identity that =1
A
11
Q
y = sin (x) graph
* Where does it starts?
* Intersections with x
* Intersections with y
* Trajectory
A
- Where does it starts?
0 - Intersections with x
x= 0, п, 2 п - Intersections with y
y= 0 - Trajectory
12
Q
y = cos (x) graph
* Where does it starts?
* intersections with x
* intersections with y
* trajectory
A
- Where does it starts?
1 - Intersections with x
x= п/2, 30п/2 - Intersections with y
y= 1 - Trajectory
13
Q
y = tan (x) graph
* Where does it starts?
* Intersections with x
* Asymptotes in x
* Trajectory
A
- Where does it starts?
0 - Intersections with x
0,п, 2п - Asymptotes in y
x= п/2, 30п/2 - Trajectory
14
Q
arc length
A
15
Q
sector area
A
16
Q
area of a triangle (no 90° angle)
A
area=abSinC
• 2 sides+ angle between them
17
Q
triangle 30º and 60º
A
