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Virty [35]
3 years ago
7

Use a special right triangle to express sin 45 degrees as a fraction

Mathematics
1 answer:
Alekssandra [29.7K]3 years ago
7 0

Answer:

Step-by-step explanation:

in a right angled triangle angles given are 45,90

Then third angle is also 45 °

as two angles are 45° each.

Then sides are also equal.

Let the equal sides be each =x

then hypotenuse=√(x²+x²)=√(2x²)=x√2

sin 45°=x/(x√2)=1/√2

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3 years ago
In ΔRST, the measure of ∠T=90°, the measure of ∠R=39°, and TR = 55 feet. Find the length of ST to the nearest tenth of a foot.
kolbaska11 [484]

<u>Answer:</u>

<h2>ST = 44.54 ft</h2>

<u>Explanation:</u>

given:

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