3 years ago

Please help me I don't understand how to do this

Mathematics

1 answer:

LiRa [457]3 years ago

6 0

Answer:

Do what though ? Tell me what the problem is when you find it!

Step-by-step explanation:

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Pls answer!! it’s due pls

Volgvan

Answer:

I think the answer is corresponding angles postulate because they are intersected by a transversal and are equal and are parallel lines.

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2 years ago

Find the exact values of cos 3 pi/4 radians sin 3 pi/4 radians.

Liula [17]

If you consult the unit circle, you will see that:

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

3pi/4 in degrees is 3pi/4 * 180/pi = 3/4 * 180 = 135 degrees. And please refer to the attachment to how you can obtain the values above.

Now, lets multiply it together.

$-\frac{\sqrt{2}}{2} \cdot \frac{\sqrt{2}}{2} =\\\\-\frac{2}{4} =\\\\ \boxed{\bf{-\frac{1}{2}}}$

So, <span>cos(3pi/4)sin(3pi/4) = -1/2</span>