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Solve for a side in right triangles help

Solve for a side in right triangles help
190k views
3 votes
Solve for a side in right triangles help

Solve for a side in right triangles help-example-1
User Aryan Najafi
by
7.8k points

2 Answers

7 votes

Answer:

7.45

Explanation:

User Zenuka
by
8.1k points
2 votes

Answer:

The length of AB is 7.45 units.

Explanation:

You can find the length of AB using Cosine Rule, cosθ = adj./hypo. :

θ = 20°

adj. = 7 units

hypo. = AB

cos 20° = 7/AB

AB = 7/cos 20°

= 7.45 units (3s.f)

User Rezrazi
by
8.2k points
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