Question

Solve for x. Round to the nearest tenth, if necessary.

I need help badly because I’m confused

Answer 1

x ≈ 1.1

Explanation:

The hypotenuse and the side adjacent to the angle are marked, so the relevant trig relation is ...

Cos = Adjacent/Hypotenuse

cos(41°) = 0.8/x . . . . . . given values filled into the relation

x = 0.8/cos(41°) . . . . . solve for x

x ≈ 1.0600104 ≈ 1.1 . . . . rounded to tenths

x = 1.1

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Additional comment

This cosine relation is one of three relations covered by the mnemonic SOH CAH TOA. It also reminds you ...

Sin = Opposite/Hypotenuse

Tan = Opposite/Adjacent