Use a Calculator to Find Cos 2

question 75

Multiple Choice

Use a calculator to find cos 2.31 rounded to the nearest ten-thousandth.

• A)-1.4843
• B)0.9992
• C)1.0008
• D)-0.6737

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Definitions:

Intermediate

A term often used to describe a middle or median condition, quality, or degree, such as in the context of volcanic rocks that have silica content between felsic and mafic compositions.

Vesicular Basalt

A basalt that contains vesicles.

Basalt

A fine-grained, dark volcanic rock created through the quick cooling of basaltic lava when it is exposed at, or just beneath, the earth's surface.

Felsic

Refers to igneous rocks that are rich in lighter elements like silicon, oxygen, aluminum, sodium, and potassium.