Mathematics: Why is cos(150⁰) not the same as cos(30⁰)? is this because of the sign values of the cos. trig function that makes it negative in the 2nd quadrant?

Why is cos(150⁰) not the same as cos(30⁰)? is this

Ответ:

maddy1276

02.06.2020

Yeah, cos 150° is negative because it's in the 2nd quadrant, which has all negative x-values. (The third quadrant has all negative x-values as well)
Cos 30° is positive because the first quadrant(and 4th) have all positive x-values.

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Ответ:

chancler

12.06.2022

Mathematics

The answer is 0.016

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Why is cos(150⁰) not the same as cos(30⁰)? is this because of the sign values of the cos. trig function that makes it negative in the 2nd quadrant?

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