formulae

Question 1

(a^m)^n

Answer 1

a^mn

Question 2

(a/b)^m

Answer 2

a^m/b^m

Question 3

a^-m

Answer 3

1/a^m

Question 4

a^x/y

Answer 4

y sqroot a^x

Question 5

what is sequence formula for term number

Answer 5

a + (n-1)d

Question 6

what is arithmetic sequence formula for sum number

Answer 6

n/2 (2a +(n-1)d)

Question 7

what is term number for geometric formula

Answer 7

ar^n-1

Question 8

sum number for geometric sequence

Answer 8

a(1 -r^n) / 1-r

Question 9

what are the 5 methods of proving congruence

Answer 9

• SAS
• ASA
• AAS
• SSS
• RHS

Question 10

volume of sphere

Answer 10

4/3 pi r^3

Question 11

volume of cylinder

Answer 11

pi r^2 h

Question 12

volume of cone

Answer 12

1/3 pi r^2 h

Question 13

volume of pyramid

Answer 13

1/3 base area height

Question 14

surface area of sphere

Answer 14

4 pi r^2

Question 15

formula for frequency, f.d and width

Answer 15

frequency = f.d. x width

Question 16

what is the sin rule

Answer 16

a/ sin A = b/sin B = c/sin C

Question 17

ambiguous case for sin rule

Answer 17

sin rule only gives acute anser so if its obtuse 180 - acute

Question 18

cosine rule

Answer 18

a^2 = b^2 + c^2 - 2bc (cosA)

Question 19

area of triangle

Answer 19

1/2ab sin C

Question 20

curved surface area of cylinder

Answer 20

2 pi r h

Question 21

curved surface area of cone

Answer 21

pi r l

Question 22

curved surface area of sphere

Answer 22

4 pi r^2

Question 23

volume of pyramid

Answer 23

1/3 base area height