Question

Find the missing side for each triangle below

Answer 1

Applying the Trigonometry ratio, CAH, the missing side is, x = 1.9.

How to Solve a Right Triangle Using Trigonometry Ratio

The Trigonometry Ratios are:

• SOH - sin∅ = opp/hyp.
• CAH - cos∅ = adj/hyp.
• TOA - tan∅ = opp/adj.

Thus, given:

∅ = 51°

hyp = 3

adj = x

• Apply, CAH:

cos 51 = x/3

x = (cos 51)(3)

x = 1.9

Thus, applying the Trigonometry ratio, CAH, the missing side is, x = 1.9.

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