Give answers correct to 3 significant figures.
1.Use the sine rule to find the side or angle marked by a letter.
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(a) |
(b) |
2. Use the cosine rule to find a and b.
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(a) |
(b) |
3. Find the area of the triangles.
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(a) |
(b) |
4. Find the lengths of the sides marked by letters.
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(a) |
(b) |
5. Find the size of the angles marked by letters.
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(a) |
(b) |
6. Find the sizes of all of the unmarked sides and interior angles of the triangles.
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(a) |
(b) |
7.
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(a) Find the area of the triangle ABC
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(b) Find the value of x, if the area of the triangle is 15 cm2.
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