How do you write 1.8 as a percentage?
1 answer:
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You can use a tangent:
We have opposite = 17 and adjacent = x.
substitute:
cross multiply
multiply both sides by √3
divide both sides by 3
Use the Pythagorean theorem:
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Other method.
triangle.
The sides are in the ratio
Therefore
For the expression 
, the coefficient of the x² term is 1.