C2 Flashcards
Give the different ways(2) to work out the area if a traingle
1/2 . base . height
or (.=multiply)
1/2 . a . b . SinC
SinA / a = SinB/b or ….
a/SinA= b/SinB
What is the cosine rule?
a² = b² + c² – 2bc cos A
When do you use cosine rule?
2 sides and an angle
or
three sides
f(x) = b^x
where b = ?, x = ?
b = base, x = exponent.
y = b^x and x=?
x = log b y
x = log b y and y=?
y = b^x
y = bx
and x = log b y , b=?
b= the x root of y
log (pq) = ?
log (pq) = log p + log q
Split number into factor pairs then use this rule to simplify.
log (p/q) =?.
log p – log q
Split number into 2 divisible numbers then use this rule.
log (px) = ?
log (px) = x log p
Useful when want x so log both sides then rearrange. Can use
calculator as log 10
which log rule is useful when want x so log both sides then rearrange. Can use
calculator as log 10
log (px) = x log p
which log rule is Useful when want to split number into 2 divisible numbers then use this rule.
log (p/q) = log p – log q
which log rule is Useful when want to split number into factor pairs then use this rule to simplify.
log (pq) = log p + log q
How do you find a remainder?
???
