39.

Did you label the right triangle and vector diagram like the ones below?

Vector diagram.

Right triangle.

40a. The vertical side of the right triangle is equivalent to the ________

vector.

40a. y

b.

The horizontal side of the right triangle is equivalent to the

_____________ vector.

40b. x

c.

The side of the right triangle opposite the 90angle is called the

______________

40c. hypotenuse

d.

The hypotenuse is equivalent to the ________________ vector.

40d. r (resultant)

41a. In addition to having three sides, all triangles have three angles.

The sum of these three angles is always 180. In a right triangle,

since one angle is 90, the sum of the other two angles must equal

__________________.

41a. 90

b.

If one of these two angles (other than the 90 angle) equals 30, the

third angle equals _____________.

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