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1. For the angle marked x in each of the following triangles, name:
i. The opposite side
ii. The adjacent side
iii. The hypotenuse
| 2. Evaluate the following trigonometric ratios and round them to 4 significant figures, where appropriate: |
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a.
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sin 54°
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g.
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sin 45°
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b.
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cos 42°
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h.
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cos 45°
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c.
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tan 61°
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i.
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tan 45°
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d.
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sin 12°
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j.
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sin 60°
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e.
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cos 78°
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k.
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cos 60°
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f.
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tan 89°
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l.
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sin 30°
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3.a. Use a calculator to complete the following tables (round where appropriate):
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x
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0°
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30°
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45°
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60°
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90°
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120°
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135°
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150°
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180°
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| sine x |
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| cosine x |
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b. Plot each of the sets of points for sine x and cosine x on a separate set of axis like those below. (angles on the x-axis)
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