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Trigonometry Problem, please help and explain

Trigonometry Problem Please Help And Explain class=

Sagot :

The bottom triangle is a 30°-60°-90° triangle that has the special property that its hypotenuse is twice the length of the shortest leg, 20√3.

The upper triangle is a 45°-45°-90° triangle, in which the hypotenuse is longer than one of its legs by a factor of √2.

All this to say x = √2 × 20√3 = 20√6 (A).