Basic algebra

Question 1

Give the double angle formula for sin(2a)

Answer 1

Question 2

Give the double angle formula for tan(2a)

Answer 2

Question 3

Give the double angle formula for cos(2a)

Answer 3

Question 4

Describe how to find the inverse of a function

Answer 4

Swap the variables, ie for a function y of x, make it such that it is a function x of y

Question 5

Give the quotient rule

Answer 5