Chapter 7 Triognometry And Modelling - Year 2 Flashcards
What are the double angle formulae?
What are the addition formulae?
What is the double angle formula for sin?
What is the double angle formula for cos?
What is the double angle formula for tan?
What is the addition formulae for sin?
What is the addition formulae for cos?
What is the addition formulae for tan?
What is a big part of questions in this chapter?
Being told what sinx= and which quadrant it is in then using cast working out what cos is
How do you do the R addition formulas
Write out the full sum as stated in the equation do the addition formulae then compare coefficients and use a triangle
How do you find the r addition formulae for use in part b?
Use part a and replace w with the inside of the sin and cos fucntions
What is the best way to find out when a maximum or minimum occurs?
Say that the inside of the sin/cos function = (what is needed to make it 1 or -1) then solve for t
How do you find the max and min of p(x), when
Put the Q(x) in to 1 trig function
To max p(x) you need to min Q(x) (bounds from GCSE)
To Min p(x) you need to max Q(x)
What is important but unlikely to happen to keep in mind when doing prof?
(It works both ways)
What is important to remember when doing modelling?
Units
