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Laabri

IM2 Trigonometric Ratios Progress Checkpoint

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Last updated 2 months ago
3 Nsɛmmisa
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Asemmisa {{asɛmmisaAhyɛnsode}}
3.

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Asemmisa {{asɛmmisaAhyɛnsode}}
1.

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

Asemmisa {{asɛmmisaAhyɛnsode}}
2.

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

True

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}

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