SAT Subject Test Mathematics Level 1

29 . B

Look    for “(sin^2     +   cos^2 )”    in  the expression:

30 . A

Sketch  a   diagram:

The net change  is  south   20  and west    60:

So  you’re  looking for the hypotenuse  of  a   right   triangle    with    legs    of  20

and 60:

31 . B