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    IBHardGeometry & Trigonometry7–9

    A small skate ramp must rise 1.51.5 m and make an angle of 30°30° with the horizontal ground. How long must the sloping surface of the ramp be, in metres?

    Uma pequena rampa para skate deve subir 1,51{,}5 m e formar um ângulo de 30°30° com o solo horizontal. Que comprimento deve ter a superfície inclinada da rampa, em metros?

    A right-angled triangle drawn to scale. The sloping surface rises from the ground on the left to a height of 1.5 metres on the right, making an angle of 30 degrees with the ground. The length of that sloping surface is marked with a question mark.30°1.5 m?

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    Solution

    Step 1 of 3

    1. 1.The rise is opposite the 30°30° angle