If the ratio is 5:7 then the each part has a value of:
60/(5+7)=5 so from a total of 60
5:7 becomes 5*5:7*5 which is:
25:35
If you looked it up online you could find it. look on safari
Answer:
Step-by-step explanation:
numerator x numerator
denominator x denominator
2 x 4=8
3 x 5=15
1 8/15

On the unit cirlce, the cosine of an angle is negative whenever the angle falls in the interval

.
If you recall your special triangles, this cosine occurs for angles of

and

.
More generally, this occurs for

and

, where

is an integer.