A triangle has angles 30°, 15° and 135°. The ...
A triangle has angles 30°, 15° and 135°. The side opposite to the angle 30° is length 6cm. The side opposite to the angle 135° is equal to
12cm
6cm
6\(\sqrt{2}\)cm
12\(\sqrt{2}\)cm
Correct answer is C
\(\frac{6}{\sin 30}\) = \(\frac{x}{\sin 135}\)
\(\frac{6}{\sin 30}\) = \(\frac{x}{\sin 45}\)
x = \(\frac{6 \times \sin 45}{\sin 30}\)
= \(6 \sqrt{2}\)cm
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