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ale4655 [162]
2 years ago
14

Solve the following problems: Given: ∆AFD, m ∠F = 90° AD = 14, m ∠D = 30° Find: Area of ∆AFD

Mathematics
1 answer:
ch4aika [34]2 years ago
4 0

We have the triangle 30° - 60° - 90°.

The sides are in proportion: 2 : √3 : 1

(look at the picture).

2a=14       <em>divide both sides by 2</em>

a=7

a\sqrt3=7\sqrt3

The area of a trinagle AFD:

A_{\Delta}=\dfrac{1}{2}(7)(7\sqrt3)=\boxed{\dfrac{49\sqrt3}{2}}

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