You need to complete it between 6 and 7 miniutes, no more than 7 and no less than 6
Answer:
Option B. 9.11
Step-by-step explanation:
To find the length of line AB, we must first of all calculate the value of θ as shown in the attached photo.
The value of θ can be obtained as follow:
θ + 39° + 120° = 180° (sum of angles in a triangle)
θ + 159° = 180°
Collect like terms
θ = 180° – 159°
θ = 21°
Thus, we can obtain the length of line AB by using sine rule as illustrated below:
b/Sine B = c/Sine C
b = 16
Angle B = 39°
Sine C = 21°
c =?
b/Sine B = c/Sine C
16/Sine 39° = c/Sine 21°
Cross multiply
c × Sine 39° = 16 × Sine 21°
Divide both side by Sine 39°
c = (16 × Sine 21°) / Sine 39°
c = 9.11
Therefore, the length of line AB is 9.11
Answer:
C) 20x+78
Step-by-step explanation:
9(x-6)+11(x+12)
9x-54+11x+132
20x-54+132
20x+78
Answer:
knowing that sin(60)=0.866, what is cos(30)
Step-by-step explanation:
Cos 30 = 8.66