Answer:
Step-by-step explanation:
<u>Use cosine:</u>
- cos = adjacent / hypotenuse
- cos ∠L = KL/JL
- cos 21° = 4/x
- x = 4 / cos 21°
- x = 4.3 (rounded)
12, or -12
12*12 = 144
-12*-12 = 144
Answer:
The equation for the trend line is y=2x-10
After simplifying the real and imaginary parts you'd get -8i