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algol13
3 years ago
14

What is the value of cos30°​

Mathematics
2 answers:
Licemer1 [7]3 years ago
5 0
Your answer will be 0.866
Eddi Din [679]3 years ago
3 0

Answer:

√3/2 or 0.866

Step-by-step 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

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