I think its answer D, but im sorry if its wrong
Answer:
option 2
Step-by-step explanation:
The problem can be solved using Pythagoras' identity for a right triangle.
The angle between due East and due North is 90°
The solution here involves using the Cosine rule.
let x be the direct distance between house and office, then
x² = 17² + 21² - 2(17)(21)cos90° → option 2
Note that since cos90° = 0 the equation reduces to
x² = 17² + 21² ← Pythagoras' identity
If the resultant line is a straight line,it represents a
direct variation.
Answer:
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Step-by-step explanation:
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Check the picture below.
make sure your calculator is in Degree mode.