formulae Flashcards
(a^m)^n
a^mn
(a/b)^m
a^m/b^m
a^-m
1/a^m
a^x/y
y sqroot a^x
what is sequence formula for term number
a + (n-1)d
what is arithmetic sequence formula for sum number
n/2 (2a +(n-1)d)
what is term number for geometric formula
ar^n-1
sum number for geometric sequence
a(1 -r^n) / 1-r
what are the 5 methods of proving congruence
- SAS
- ASA
- AAS
- SSS
- RHS
volume of sphere
4/3 pi r^3
volume of cylinder
pi r^2 h
volume of cone
1/3 pi r^2 h
volume of pyramid
1/3 base area height
surface area of sphere
4 pi r^2
formula for frequency, f.d and width
frequency = f.d. x width
what is the sin rule
a/ sin A = b/sin B = c/sin C
ambiguous case for sin rule
sin rule only gives acute anser so if its obtuse 180 - acute
cosine rule
a^2 = b^2 + c^2 - 2bc (cosA)
area of triangle
1/2ab sin C
curved surface area of cylinder
2 pi r h
curved surface area of cone
pi r l
curved surface area of sphere
4 pi r^2
volume of pyramid
1/3 base area height
