Answer:
cosA = 0.6
Step-by-step explanation:
Using the Pythagorean identity
sin²A + cos²A = 1 ( subtract sin²A from both sides )
cos²A = 1 - sin²A ( take the square root of both sides )
cosA = ± 
Since only the positive value is required , then
cosA = 
= 
= 
= 0.6
685-85=600 would be 2 years of service.
600/2=300 would be 1 year.
300/12=25 would be 1 month. The monthly fee is $25.
Answer:
A.
The monomial expression 2w represents the height of the fish tank.
Step-by-step explanation:
49 - 2/3 <em>x</em> = 32 - 1/6 <em>x</em>
Move the constant terms to one side and the terms containing <em>x</em> to the other:
49 - 32 = 2/3 <em>x</em> - 1/6 <em>x</em>
Simplify the left side, and pull out the common factor of <em>x</em> on the right side:
17 = (2/3 - 1/6) <em>x</em>
Write the fractions in terms of a common denominator. In this case, you would take
2/3 = 4/6
so that
(2/3 - 1/6) <em>x</em> = (4/6 - 1/6) <em>x</em> = 3/6 <em>x</em> = 1/2 <em>x</em>
Then the equation is
17 = 1/2 <em>x</em>
Multiply both sides by 2:
2 × 17 = 2 × 1/2 <em>x</em>
34 = <em>x</em>
