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Sagot :

IHINAA

[tex]cos 63 = \frac{1.3}{AC}[/tex] ⇒ [tex]AC = \frac{1.3}{cos63}[/tex] ≈ 2.8 cm

[tex]tan 63 = \frac{AB}{1.3}[/tex] ⇒ AB = tan 63 x 1.3 ≈ 2.5 cm

[tex]cos 30 = \frac{AC}{14}[/tex] ⇒ AC = cos 30 x 14 ≈ 12.1 cm

[tex]sin 30 = \frac{AB}{14 }[/tex] ⇒ AB = sin 30 x 14 = 7 cm  

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