Pure Mathematic Equations Flashcards
What is the equation for sine rule?
a/sin(A) = b/sin(B)
What is the equation for cosine rule?
a2 = b2 + c2 - 2bc x cos(A)
What is the equation for area of a triangle?
1/2 x ab x sin(C)
What is the equation for arc length in radians?
§ x r
What is the equation to convert from degrees to radians?
x pi/180
What is the equation to convert from radians to degrees?
x 180/pi
What is the principle value?
Sin(§) -90 < x < 90
What does the symbol § actually represent?
Theta
What is the equation for area of a sector in radians?
1/2 x § x r2
What does a 2 after a number or letter represent?
The value squared
When b2 - 4ac > 0 there are …
Two distinct real roots
When b2 - 4ac = 0 there is …
One repeated root
When b2 - 4ac < 0 there are …
No real roots
What are the 3 identity functions?
1 = cos2(§) + sin2(§)
tan(§) = sin(§) / cos(§)
tan2(§) = sin2(§) / cos2(§]
