A helicopter makes a forced landing at sea. The last radio signal received at station C gives the bearing of the helicopter from C as N 57.0° E at an altitude of a = 432 feet. An observer at C sights the helicopter and gives LDCB as 13.3°. How far will a rescue boat at A have to travel to reach any survivors at B? (See the figure below. Round your answer to the nearest 10ft.) | ft

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Fundamentals of Trigonometric Identities

Trigonometric Identities are the equalities that involve trigonometry functions and hold for all the values of variables given in the equation.