The point (Negative StartFraction StartRoot 2 EndRoot Over 2 EndFraction, StartFraction StartRoot 2 EndRoot Over 2 EndFraction)
2 answers:
The cosine and cotangent values of angle Ф are 
and -1. When the terminal side of an angle intersects the unit circle at point (x, y), then: The x-coordinate corresponds to the cosine of the angle formed with the positive x-axis and the terminal side, while the y-coordinate corresponds to the sine of that angle. Depending on the signs of x and y coordinates, we can determine the quadrant in which the angle resides.
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To address this problem, let's start by formulating the general motion equation along the vertical direction.
This gives us:
Where,
- g: gravitational acceleration
- vo: initial velocity
- h0: starting height
For the first individual:
For the second individual:
When both individuals reach the identical altitude, the following holds:
Rearranging results in:
Solving for time:
Result:
The two window washers reach the same height after 18.31 seconds.