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Nookie1986 [14]
3 years ago
6

#5 - find the values of x and y. Write your answers in simplest form.

Mathematics
1 answer:
madam [21]3 years ago
5 0

Given:

In the given triangle,

With respect to 30°, the perpendicular = 9, the base = x and the hypotenuse = y

To find the value of x and y.

Formula

By Trigonometric ratio we get,

sin\theta = \frac{opposite}{Hypotenuse} and

tan\theta = \frac{opposite}{adjacent}

Now,

Putting, perpendicular = 9 and \theta=30^\circ we get,

sin30^\circ = \frac{9}{y}

or, \frac{1}{2} = \frac{9}{y}

or, y =18 [ by cross multiplication]

Again,

tan30^\theta = \frac{9}{x}

or, \frac{1}{\sqrt{3} } = \frac{9}{x}

or, x = 9\sqrt{3} [ by cross multiplication]

Hence,

The value of x and y is 9√3 unit and 18 unit respectively.

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