3 years ago

Sin (3pi/4) =_____ please help!!!

Mathematics

2 answers:

Jlenok [28]3 years ago

5 0

Answer:

That is asking you to find the sine of (3/4) PI radians.

If you look at the attached graphic, you will see that (3/4) PI radians = 135 degrees

Going to this calculator, we see that the sine of 135 degrees is 0.70711

https://www.1728.org/trigcalc.htm

Step-by-step explanation:

finlep [7]3 years ago

4 0

$sin\frac{3}{4}\pi=sin(\pi-\frac{\pi}{4})=sin\frac{\pi}{4}=\frac{\sqrt2}{2}$

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2 years ago

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3 years ago

Read 2 more answers

A farmer has both pigs and chickens on his farm there are 78 fee and 27 heads how many pigs and how many chickens are there

Andre45 [30]

Assuming health non-mutated animals:
$Feet = 4*Pigs + 2*Chickens$
$Heads = Pigs + Chickens$

By back substitution:
$78 = 4*(27-Chickens) + 2*Chickens$
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$-30 = -2*Chickens$
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Then:
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To check:
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3 years ago

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DedPeter [7]

Answer:25.12

Step-by-step explanation:

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