IA - JMap

8 Which equation shows a correct trigonometric ratio for angle A in
the right triangle below?
Use this space for
computations.
B
8 cm
17 cm
C 15 cm A
(1) sin A = 15
17
(3)
(2) tan A = 8
17
(4)
cos A = 15
17
tan A = 15 8
9 Debbie solved the linear equation 3(x + 4) − 2 = 16 as follows:
She made an error between lines
(1) 1 and 2 (3) 3 and 4
(2) 2 and 3 (4) 4 and 5
Integrated Algebra – January ’10 [5] [OVER]