Answer:
choice 3)
JK = 3.51
WK = 9.15
∠J = 69°
Step-by-step explanation:
sin 21° = JK/9.8
0.3584 = JK/9.8
cos 21° = WK/9.8
0.9336 = WK/9.8
WK = 9.15
∠J = 90° - 21° = 69°
Answer: 5x(x-1)
Step-by-step explanation:
2(x2 - x) + 3 (x2 - x)
5x(2 power) - 5x
= 5x(x - 1)
False- the included angle must be a right angle for cos C to be 0 & two other points are normally used
