ECC Trigonometry | Checkpoint #5

Which of the following statements is true?

• There are infinitely many ways to create a triangle given two sides and a non-included angle.

• When given the triangle measurements AAS, ASA, SSS, or SAS, there is only one way to complete the measurements of the triangle, but when given SSA, there could be more than one way.

• The Law of Sines and Law of Cosines are used only in right triangles.

• To use the Law of Cosines, you need the measures of at least one side and its opposite angle.

Vector v is given by <−4, 1>. If vector w is graphed as shown, what is the component form of vector w + v?

• <-4,1>

• <-2,4>

• <2,4>

• <6,4>

Mathematical Equivalence

ON

Which of the following equations could represent the graph shown?

• r = 4 - 3sinθ

• r = 3 + 5cosθ

• r = 4 - 6sinθ

• r = 2 + 2cosθ

Convert the polar coordinates (8, 210°)

into rectangular coordinates (x,y).

Submit x+y as your answer.

Mathematical Equivalence

ON

Mathematical Equivalence

ON

• 5
• 18
• 21
• 6
• 0
• 10
• 12

Finding the magnitude and direction of a vector that is given in component form is most like:

• Converting a point from rectangular coordinates to polar coordinates.

• Adding two vectors graphically.

• Converting a point from polar coordinates to rectangular coordinates.

• Determining if a given set of conditions creates 0, 1, or 2 triangles.

Mathematical Equivalence

ON