things you need to know Flashcards
1
Q
what is the hypotenuse of the triangle with two 45 degree angles in it
A
root 2
2
Q
what is the hypotenuse of the triangle with 30 and 60 degrees in it
A
2
3
Q
what is the length in the bottom of both triangles
A
1
4
Q
what is cos60
A
1/2
5
Q
what is cos30
A
root 3 / 1
6
Q
what is cos45
A
1/root2
7
Q
what does it mean if the roots are real and unequal
A
b2 - 4ac is greater than 0
8
Q
what does it mean if the roots are real and equal
A
b2 - 4ac is equal to zero
9
Q
what does it mean if the roots are not real and don’t cross the x axis
A
b2 - 4ac is less than zero
