Trigonometry Y.1 Flashcards
1
Q
What equation is used to find a missing angle?
A
a^2 = b^2+c^2-2bc(cosA)
2
Q
What is the area of a triangle?
A
1/2(ab)(sinC)
3
Q
Which graphs repeat every 360 degrees?
A
cos and sin
4
Q
Which graphs repeat every 180 degrees?
A
tan
5
Q
Give identities linking sin and cos
A
sinx/cosx = tanx
sin^2x+cos^2x=1
6
Q
What are the y-axis limits for sin and cos?
A
1 and -1
7
Q
What are the y-axis limits for tan?
A
none
8
Q
A
