Two cars start at the same time from the same station and move along straight roads that form an angle of 30°, one car at the rate of 30 kph and the other at the rate of 40 kph. How far apart are the cars at the end of half an hour ? A. 10.17 km        B. 10.27 km C. 10.37 km        D. 10.47 km   (Illustrate and use trigonometric functions and identities)

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Q: 33. Which trigonometric function must be use to get the ratio of BC/AC ? C angle of elevation A

A: 33

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A:

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A: We use the identity sin2θ+cos2θ=1

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A: Given, BC= 12 cm Angle A= 68° Angle C= 43°

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A: topic - Law of sines

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