Answer:
The cosine of the angle is 4/5.
Step-by-step explanation:
An acute angle is between 0º and 90º, in the first quadrant of the trigonometric circle, in which both the sine and the cosine are positive values.
For each angle 
, we have that:
We have that:
So
The cosine of the angle is 4/5.
S=2(4x+2x)+4x^2=4x^2+12x
4x^2+12x=7
4x^2+12x-7=0
D=12^2-4x4x(-7)=256
X1=(-12-16)/(2x4)=-3.5 impossible
X2=(-12+16)/(2x4)=0.5
A
Answer: uh do I subtract add multiply or divide?
Step-by-step explanation:
Answer = £15347.06
100 - 19.5 = 80.5
80.5 / 100 = 0.805
19064.67 x 0.805 = £15347.06
Answer: 32.2
Step-by-step explanation:
