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2 years ago

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Two sides of a right triangle ABC (C is the right angle) are given. Find the indicated trigonometric function of the given angle

. Give exact answers with rational denominators.
Find sin A when a = 4 and b = 5.

1 answer:

Arisa [49]2 years ago

6 0

5 root 41/41
draw a right triangle. label the sides. use the Pythagorean theorem. do sin of the angle A. rationalize denominator.

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An obtuse triangle has two angles 45 n 18 ,and a third unknown angle theta what's the value of the unknown angle

zlopas [31]

<u>Answer:</u>

An obtuse triangle has two angles 45 and 18. The value of the unknown angle is $117^{\circ}$

<u>Solution:</u>

Given that two angles of an obtuse triangle is 45 and 18.

Third angle is θ

We are asked to find the value of third unknown angle theta

According to <em>angle sum property of triangle</em>, sum of three angles of triangle is $180^{\circ}$

This means in our case sum of 45, 18 and θ should be $180^{\circ}$

$\begin{array}{l}{=>45+18+\theta=180} \\ {=>\theta=180-63=117^{\circ}}\end{array}$

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