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JulsSmile [24]
3 years ago
15

Solve for side AB. Show all your work Please help!

Mathematics
1 answer:
mrs_skeptik [129]3 years ago
7 0

Given triangle is a right angle triangle so we are allowed to use trigonometric formulas.

We want to find Hypotenuse using angle A and base 7 cm

so right choice is to use cosine

\cos(A)=\frac{AC}{AB}

\cos(25^{\circ})=\frac{7}{AB}

0.90631=\frac{7}{AB}

AB=\frac{7}{0.90631}

AB=7.72362657369

Hence value of side AB is approx 7.72 cm.

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