Trigonometry and Geometry Flashcards
1
Q
What are the THREE formulas to calculate lenghts or angles?
A
SOH {SINx=opp/hyp}
CAH {COSx=adj/hyp}
TOA {TANx=opp/adj}
x= the angle given
2
Q
a^2+b^2=c^2 is the formula for?
A
Pythagoras’ theorem
3
Q
What is Sine Rule?
A
a/SinA=b/SinB=c/SinC
4
Q
What is Cosine Rule?
A
a^2= b^2 + c^2-( 2bc Cos A) A= angle A
5
Q
Area of a triangle?
A
1/2 ab Sin C
C= angle C, if the angle given is other than C simply put the angle given instead of the C
6
Q
perimeter of squares
A
4(side lenght)
7
Q
perimeter of rectangles
A
2 lenths x 2 w
