Application of Trigonometric Ratios:
1 answer:
9514 1404 393
Explanation:
Graphs of sine and cosine functions are readily available in your text, on the web, and in your graphing calculator or spreadsheet. A graph is also attached here.
The sine and cosine graphs are identical, except that the cosine function is shifted left 1/4 cycle relative to the sine function. Both parent functions have a peak value of 1, and a period of 2π. The sine function is symmetrical about the origin (an odd function), and the cosine function is symmetrical about the y-axis (an even function).
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Answer:
Step-by-step explanation:
Given that a solution containing 12% alcohol is to be mixed with a solution containing 4% alcohol to make 20 gallons of solution containing 9% alcohol.
Let x gallons of 12% alcohol be mixed with y gallons of 4% alcohol.
Total gallons
Alcohol content in the total mixture
b) Two equations are
c) This is of the form Ax = B
where A =
Inverse is
Solution set is A inverse *B
=