3 years ago

Evaluate sin 5pi/4 Thank you

Mathematics

2 answers:

Verizon [17]3 years ago

8 0

Answer:

-sqrt(2)/2

Step-by-step explanation:

5pi/4 lies in the third quadrant with basic angle: 5pi/4 - pi = pi/4

sin(pi/4) = sqrt(2)/2

Since it's in quadrant 3, sin would be negative

sin(5pi/4) = -sqrt(2)/2

sqrt: square root

kondaur [170]3 years ago

3 0

Answer:

3.92699081699

Step-by-step explanation:

$\frac{5(3.14)}{4}\\$ =15.7/4

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4 years ago

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38830

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2 years ago