ladder 16m long is placed against a wall so as to reach a mural painting ledge 12m above the ground. How far from the side of the building must the bottom of the ladder be so that the top of the ladder will reach a point 2m above the mural painting ledge? 2. Flight 106 of the Philippines Airlines takes off at an angle of 30° from the ground. How high above the ground is the plane when it has traveled a horizontal distance of 6000 ft? 3. Vilma and Vicky, falling in one line perspective, look at the cubic LED screen in Smart Araneta Coliseum. Vilma observes it making a 30° angle of elevation while Vicky observes it in a 45° angle of elevation. If the cubic LED screen is 60ft above the floor, how many feet away is Vilma from Vicky?

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Ratios

A ratio is a comparison between two numbers of the same kind. It represents how many times one number contains another. It also represents how small or large one number is compared to the other.

Trigonometric Ratios

Trigonometric ratios give values of trigonometric functions. It always deals with triangles that have one angle measuring 90 degrees. These triangles are right-angled. We take the ratio of sides of these triangles.