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IM2 Trigonometric Ratios Progress Checkpoint

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Last updated about 3 hours ago
3 questions
Required
2
G.SRT.7
G.SRT.8
MP.7
Required
4
G.SRT.7
MP.7
Required
4
G.SRT.7
MP.3
MP.7
Question 1
1.

In the triangle below, \sin(J)=\frac{3}{5}. What is \cos(K)?

Question 2
2.

Given the picture below, is each trigonometric equation true or false?

True
Question 3
3.


Given the triangle above, Alex is convinced that the \sin(A)=\frac{5}{13} . Lina is pretty sure that the \cos(B)=\frac{5}{13} . Carlos says that Alex and Lina are both correct, however Diana thinks they are both incorrect.

Who's right? Thoroughly explain your answer.


OPTIONAL WORD BANK: You may wish to use some of these words in your explanation.
  • sine
  • cosine
  • tangent
  • right triangle
  • opposite side
  • adjacent side
  • hypotenuse
  • reference angle
  • acute angle
  • complementary
  • supplementary

False
\sin(25\degree)=\frac{x}{z}
\cos(65\degree)=\frac{x}{w}
\tan(65\degree)=\frac{w}{z}
\tan(25\degree)=\frac{x}{w}