Mathematics: Determine the sign of sin five pi divided by four without using a calculator.

Determine the sign of sin five pi divided by four

Ответ:

sciencecreation87

15.03.2022

Imagine the unit circle.

$\pi \ \textless \ \frac{5\pi}{4} \ \textless \ 2\pi$

Therefore, the point will be below the x axis, so its y coordinate will be negative.

Therefore, the sign is negative.

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Ответ:

maddielr17

15.03.2022

Mathematics

Negative

Step-by-step explanation:

Given is an angle 5pi/4 and we have to find sine value

Since 5pi/4 lies in III quadrant using All silver tea cups rule, sine will be negative.

Principal value for

$\frac{5\pi}{4} is \frac{\pi}{4}$

Hence sin $=\frac{5\pi}{4} =\frac{-1}{\sqrt{2} }$

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Ответ:

pinkyglitter3308

26.01.2021

Mathematics

A) 150

Step-by-step explanation:

Bro this is so easy.

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Determine the sign of sin five pi divided by four without using a calculator.

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