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3 years ago

What does the pythagoras famous theorem involve

Mathematics

1 answer:

Ierofanga [76]3 years ago

5 0

Its formula Is h^2=b^2+c^2

and it involves the perpendicular, the base and the hypotenuse of a right triangle only.

Usually in questions, one of the value is not given and we have to solve using the theorem to get the last value

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What are the steps to solve 7÷2 1/3

igomit [66]

You have to make 7 into 21/3. Then change 2 1/3 into 7/3. Then divide 21/3 abd 7/3 which equals 3/3 which equals 1.

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3 years ago

La oración 3+ (5 + 2) = (5 + 2) +3 muestra qué propiedad?

Flauer [41]

The expression represents commutative property of addition

Hope this helps

-AaronWiseIsBae

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3 years ago

Each exterior angle of a regular polygon measures 60 degree how many sides does a polygon have ?

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360/60=6
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3 years ago

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Given the equation y = 3x + 2 , what is the value of x when y = 8? A:2 B:4 C:6 D:9

stiv31 [10]

Answer:

Step-by-step explanation:

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3 years ago

Given: cosθ= -4/5 , sin x = -12/13 , θ is in the third quadrant, and x is in the fourth quadrant; evaluate tan 1/2 θ

mrs_skeptik [129]

Answer:

Step-by-step explanation:

If you're looking for what the half angle of the tangent of theta is, I'm a bit confused as to why you think the angle in the 4th quadrant, x, is relevant. But maybe you don't know it isn't and it's a "trick" to throw you off. Hmm...

Anyways, the half angle identity for tangent is

$tan(\frac{\theta}{2})=\frac{sin\theta}{1+cos\theta}$

There are actually 3 identities for the tangent of a half angle, but this one works just as well as either of the others do, so I'm going with this one.

If theta is in QIII, the value of -4 goes along the x axis and the hypotenuse is 5. That makes the missing side, by Pythagorean's Theorem, -3. Filling in our formula:

$tan(\frac{\theta}{2})=\frac{-\frac{3}{5} }{1+(-\frac{4}{5}) }$ which simplifies a bit to

$tan(\frac{\theta}{2})=\frac{-\frac{3}{5} }{\frac{5}{5} -\frac{4}{5} }$ and a bit more to

$tan(\frac{\theta}{2})=\frac{-\frac{3}{5} }{\frac{1}{5} }$

Bring up the lower fraction and flip it to divide to get

$tan(\frac{\theta}{2})=-\frac{3}{5}*\frac{5}{1}$ which of course simplifies to

-3. Choice A.

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3 years ago