OAE Math

Question 1

Conjugate of a+bi

Answer 1

a-bi

Question 2

Find inverse of function

Answer 2

Switch x and y

Question 3

Lateral surface area of a cone

Answer 3

(pi)(r)(slant height)

Question 4

Congruent triangles

Answer 4

Same angles and side lengths

Question 5

Congruent lines

Answer 5

Same length

Question 6

Amplitude

Answer 6

(max - min) / 2

Question 7

Law of Cosines

Answer 7

c^2 = a^2 + b^2 - (2ab)cos[c]

Question 8

Integral from a to b of f(x)

Answer 8

Negative integral from b to a of f(x)

Question 9

tan(@)

Answer 9

sin(@)/cos(@)

Question 10

cot(@)

Answer 10

1/tan(@)

Question 11

sec(@)

Answer 11

1/cos(@)

Question 12

csc(@)

Answer 12

1/sin(@)

Question 13

sin^(2) + cos^(2)

Answer 13

1

Question 14

sec^(2)

Answer 14

1 + tan^(2)

Question 15

Ln(xy)

Answer 15

Ln(x) + Ln(y)

Question 16

Ln(x^y)

Answer 16

yLn(x)

Question 17

Circle formula: Center (h,k) and radius r

Answer 17

(x-h)^2 + (y-k)^2 = r^2

Question 18

Law of Sines

Answer 18

a/sin(A) = b/sin(B)

Question 19

Sin(A-B)

Answer 19

Sin(A)xCos(B) - Cos(A)xSin(B)

Question 20

Harmonic function

Answer 20

f(x) = (A)Sin(Bx), A=amplitude,2pi/B=period