From Förberedande kurs i matematik 1
Exercise 4.2:1
Using the trigonometric functions, determine the length of the side markedx
Svar 4.2:1
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Exercise 4.2:2
Determine a trigonometric equation that is satisfied by v.
Svar 4.2:2
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Exercise 4.2:3
Svar 4.2:3
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Exercise 4.2:4
Svar 4.2:4
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Exercise 4.2:5
Svar 4.2:5
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Exercise 4.2:6
Determine the length of the side marked x.
Svar 4.2:6
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Exercise 4.2:7
In order to determine the width of a river, we measure from two points, A and B on one side of the straight bank to a tree, C on the opposite side. How wide is the river if the measurements in the figure are correct?
Svar 4.2:7
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Exercise 4.2:8
Svar 4.2:8
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Exercise 4.2:9
The road from A to B consists of three straight parts AP, PQ and QB, which are 4,0 km, 12,0 km and 5,0 km respectively. The angles marked at P and Q in the figure are 30° and 90° respectively. Calcualte the distance as the crow flies from A to B. (The exercise is taken from the Swedish National Exam in Mathematics, November 1976, although slightly modified.)
Svar 4.2:9
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