ratio Flashcards
1
Q
To find out how many more of something we need (e.g. animals) to make the ratio of e.g. cats to dogs change, e.g. from 2:5 to 5:4, what must we do?
A
Find an equivalent ratio to the new ratio, e.g. 5:4 where the values are over the original or the same e.g. the total number of cats must be the same or more.
2
Q
When asked to use trig to work out the ratio of sides of a triangle, what can we do?
A
Write an equation using sin ,cos, tan, and the angle given.
Then write one as a value of another.
Divide by, e.g. AB to get 1 on one side and probs a decimal on the other
Find the smallest whole number ratio.
