Adjacent side to angle 60º=2/3
opposite side to angle 60º=b
hypotenuse=a
cos 60º= adjacent side / hypotenuse
cos 60º=(2/3) / a
a=(2/3) / cos 60º=(2/3) / (1/2)=4/3
tan 60º= opposite side / adjacent side
tan 60º=b / (2/3)
b=(2/3)*tan 60º=(2/3)* √3=2√3 /3
Answer:
a=4/3
b=2√3 /3
Answer:
$29364.95
Step-by-step explanation:
The formula to apply is;

where ;
A=amount at the end
P=principal amount
r=rate of interest as a decimal
n=number of compoundings a year
t=total number of years
Given in the question
A=$55000
t=8 years
n=2
r=0.08
P=?
Substitute the values in the equation;

Checking the answer

The equation is 138=300-3x
now solve by first subtracting 300 from each side: -162=-3x
divide each side by -3: x=54
The wise man is 54 years old
Answer B is the correct answer ;p
D. Definition of linear pairs.
When two angles are on a straight line, there sum equals 180 degrees. This is linear pairs.