Trigonometry Graphs Flashcards
1
Q
What is sin when 0°, 90°, 180°, 270° and 360° in a graph?
A
0, 1, 0,-1, 0
2
Q
What is cos when 0°, 90°, 180°, 270° and 360° in a graph?
A
1, 0, - 1, 0, 1
3
Q
What does a tan graph look like?
A
Starts at 0, increases but never touches 90, then just past 90 becomes a cubic graph till just before 270, and pattern continues
4
Q
How to find area of a triangle by only knowing two sides and an angle?
A
1/2absin(C)
5
Q
How to find an angle using cosine rule?
A
2BC
6
Q
What are the 4 rules for congruence?
A
ASA, SAS, SSS, RHS
7
Q
How do you find frequency density for histograms?
A
Freq/classwidth
8
Q
How can you prove that a straight line in vectors
A
If they go through the same point
9
Q
How can you prove that a line is parallel?
A
If they contain a + b in answer
