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What is the value of cos30°​
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What is the value of cos30°​

User LostJon
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3.3k points

2 Answers

3 votes
Your answer will be 0.866
User Ganbustein
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3.3k points
4 votes

Answer:

√3/2 or 0.866

Explanation:

Use special triangles. (See attachment)

The cosine ratio is adjacent ÷ hypotenuse.

cos30° = √3 ÷ 2 = √3/2

As a decimal, cos30° ≈ 0.866

Remember all the primary trig ratios with the acronym SohCahToa.

"o" = opposite

"a" = adjacent

"h" = hypotenuse

S, C and T are sin, cos, tan

What is the value of cos30°​-example-1
User Daniel Hitzel
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3.8k points
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