SAT Subject Test Mathematics Level 2

which in this case is the product of the denominators x − 1 and x + 1.

The answer is (E).

Here’s a question for which you have a choice. You can answer it just as quickly and easily with or
without a calculator:

Figure  1

You could use your calculator to find out what angle has a sine of 0.5, but you might just know that
it’s 30°. This is a 30-60-90 triangle, and BC is the longer leg, which is equal to the shorter leg times

. Since AC = 1, then . You could use your calculator to find the square root of 3, but you

2. In   Figure  1,  if  sin θ   =   0.5,    what    is  the length  of  BC?

(A) 1.25

(B) 1.41

(C) 1.50

(D) 1.73

(E) 2.00