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Aloiza [94]
2 years ago
10

The diagonal of a rectangle is of length a. It splits each corner forming two angles with a ratio of 1:2. The area of the rectan

gle is: Select one: a. 1/2 a^2 b. 1/4 a^2 c. 2a^2 d.sqrt 2/2a^2 e. sqrt 3/4a^2 f/ sqrt 3/4a^2

Mathematics
1 answer:
HACTEHA [7]2 years ago
5 0

Answer:

Step-by-step explanation:

Given

Length of diagonal is a

Diagonal divides the angle in 1:2

such that \theta +2\theta =90 (because angle between two sides is 90)

3\theta =90

\theta =30^{\circ}

width of rectangle is b=a\sin \theta =\frac{a}{2}

Length of rectangle is L=a\cos 30=\frac{\sqrt{3}}{2}a

Area of rectangle A=L\cdot b

A=\frac{\sqrt{3}}{2}a\times \frac{a}{2}

A=\frac{\sqrt{3}}{4}a^2

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