Trig
Geometry
Level
3
A person is facing forward, their hips are 40cm wide.
The person turns anti-clockwise and you can only see 30cm of their hips.
How far has the person turned (to the nearest degree)?
48
39
37
45
41
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1 solution
The person standing front on is 40cm. He rotates so that only 30 cm i([s showing.
If you draw this graphically it's a section of a circle. Both sides are 40 cm. However from the back side perpendicular down. The length becomes 30cm.
Cos theta = 30/40
Theta = 41