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3 years ago

6

Why is a straight line 180 degrees?

1 answer:

a_sh-v [17]3 years ago

4 0

Think of a circle. We know it (and all circles) measure 360°. If you think about bisecting that circle, you would divide its 360° by 2, which results in 180°. The circle becomes a half-circle after being bisected, and its straight side (a straight angle) is 180°.

I've attached a diagram illustrating this.

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The base of an isosceles triangle is a fourth as long as the two equal sides. write the perimeter of the triangle as a function

jeka57 [31]

Set the length of the base as x, the two equal sides are then 4x each, so the perimeter is x+4x+4x=9x

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4 years ago

Verify the identity algebraically:<br> Csc(-x)tanx =-secx

weqwewe [10]

Step-by-step explanation:

Recall that

$\sin(-x) = -\sin x$

Therefore,

$\csc(-x) = \dfrac{1}{\sin(-x)} = -\dfrac{1}{\sin x}$

so

$\csc(-x)\tan x = \left(-\dfrac{1}{\sin x}\right)\left(\dfrac{\sin x}{\cos x}\right)$

$\:\:\:\:\:\:\:\:\:= -\dfrac{1}{\cos x} = -\sec x$

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3 years ago

99.999 rounded to the nearest tenth would be?

ale4655 [162]

Answer:

Look at the place after the tenths, it is more than 5.

99.999

So add +1 to the tenths place.

Rounded to the nearest tenth would be:

<h2>100.0</h2>

4 0

4 years ago

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This recipe makes 7 portions of chocolate mousse.

Artist 52 [7]

Answer

<h2>hey..! </h2>

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3 years ago

Which of these supporting details BEST fits after sentence 2?

jeyben [28]

Answer:

c

Step-by-step explanation:

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3 years ago

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