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HACTEHA [7]
1 year ago
9

I want to know how I can solve this question.

Mathematics
1 answer:
Natali [406]1 year ago
6 0

For the right triangle shown in the picture, recall the trigonometric identity of the cosine function:

\cos (B)=\frac{a}{c}

Isolate <em>a</em> from the equation:

a=c\cdot\cos (B)

Substitute for <em>c=6.3</em> and <em>B=43.8°</em>:

a=6.3\cos (43.8)

Use a calculator to evaluate the expression:

\begin{gathered} a=4.547089437\ldots \\ \approx4.6 \end{gathered}

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