Traditional Culture Encyclopedia - Traditional festivals - C island is traditional and orderly
C island is traditional and orderly
Solution: ∵ In Rt△ACD, ∠ CAD = 30, AC=60 nautical miles.
∴CD= ×60 =30 (nautical mile).
∫ In Rt△BCD ∠ CBD = 45,
∴BC=30 × =60 nautical miles.
∴60÷60= 1 (hour).
A: It takes 1 hour to get from B to C Island.
In Rt△ACD and Rt△BCD, the length of BC is obtained by using the properties of trigonometric function, and then the answer is obtained.
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