A geometry problem

Geometry Level 2

The above shows a trapezium A B C D ABCD where A B = B C = C D = 10 AB=BC=CD=10 . Then which of the following represents the area of the trapezium A B C D ABCD ?

100 cos ⁡ θ ( 1 + sin ⁡ θ ) 100\cos\theta(1+\sin \theta) 100 tan ⁡ θ cos ⁡ θ 100\tan \theta \cos \theta 10 tan ⁡ θ 10\tan \theta

Abdullah Mughal by Abdullah Mughal , 18, Switzerland

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