Oblicz pole równoległoboku ABCD mając dane: |AB| = 18cm, |AD| - 15cm, |kąt BAD| = 64 stopnie.
Bardzo proszę o pomoc:)
|AB| = a
|AD| = b
α = 64°
P = 2 * 1/2 * ab * sinα = ab*sinα = 18cm * 16cm * 0.8988 = 258.8544 cm²
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|AB| = a
|AD| = b
α = 64°
P = 2 * 1/2 * ab * sinα = ab*sinα = 18cm * 16cm * 0.8988 = 258.8544 cm²