EXERCISE 6WORK OUT EACH PROBLEM. FOR QUESTIONS 1–4, CIRCLE THE LETTER...

5. (B) The slope of

AB

=triangle, you can easily apply either the sine or

−

y

y

3

3

3

6

2

1

− −

(

)

= =

−

=

− −

4

4

8

the cosine function to determine the length of

4

x

x

(

)

. The slope of the lineperpendicular to

AB

is the negative reciprocalthe hypotenuse. Applying the function sin30° =

1

of

³