exam Maths Puzzle Numerical Ability

Use trigonometric ratios and/or the Pythgorean Theorem to find the lengths of sides b and c. Round your anser to the nearest tenth.

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exam Other Question

how would you answer this problem x+y<6
and x-y > 1 A plane can travel 400 miles against the wind in the same time that it can travel 500 miles with the wind. If the speed of wind was 10 miles per hour. Find the speed of the plane in still air.