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MakcuM [25]
3 years ago
15

What is the exact value of cos 5pi/4 radians?

Mathematics
1 answer:
uranmaximum [27]3 years ago
3 0
Π radians = 180°
5 π / 4 = 5 · 180° / 4 = 900° / 4 = 225°
cos ( 5π/4 ) = cos 225°
With the unit circle we can find the exact value:
cos 225° = - √2 / 2 ≈ - 0.7071
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Explanation:

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A 9% decrease means the multiplier is 1-0.09 = 0.91

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Extra Info:

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According to the task content;

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brainly.com/question/12971752

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See below.

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This answer assumes they are supposed to be:

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See attached graph.

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