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3 years ago

Which point is located in Quadrant I1? O (4,5) O (4,-5) O (4, -5) O (4, 5)

Mathematics

2 answers:

Montano1993 [528]3 years ago

6 0

Answer:

4,5

Step-by-step explanation:

they are both positive

Otrada [13]3 years ago

4 0

Answer:

(-4, 5)

Step-by-step explanation:

negative x positive y

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Verifying Trig Functions

anzhelika [568]

Answer:

The answer to your question is below

Step-by-step explanation:

csc α - cot α = $\frac{sin \alpha }{1 + cos \alpha }$

Work with the left part

$\frac{1}{sin\alpha } - \frac{cos \alpha }{sin \alpha}$

Simplify

$\frac{1 - cos\alpha }{sin\alpha }$

Multiply by the reciprocal

$\frac{1 - cos\alpha }{sin \alpha } x \frac{1 + cos\alpha }{1 + cos\alpha }$

Simplify

$\frac{1 - cos^{2}\alpha}{sin\alpha (1 + cos\alpha)}$

Remember that

sin²α = 1 -cos²α

Substitute the previous equation

$\frac{sin^{2}\alpha }{sin\alpha(1 + cos\alpha ) }$

Simplify

$\frac{sin\alpha}{1 + cos \alpha}$

The identity i proved.

5 0

3 years ago

Find the value of x in the following triangle

ozzi

Answer:

x = 124°

Step-by-step explanation:

The sum of the 3 angles in a triangle = 180° , then

x = 180° - (32 + 24)° = 180° - 56° = 124°

4 0

3 years ago

Abigail tosses a coin off a bridge into the stream below. The distance, in feet, the coin above the water is modeled by the equa

melomori [17]

Answer:

7 seconds

Step-by-step explanation:

Distance of the coin above the water is modeled by the equation

$y=-16x^2+96x+112$

where $x$ is time taken to cover the distance

Now equating with zero.

$0=-16x^2+96x+112\\\Rightarrow 16x^2-96x-112=0\\\Rightarrow x=\dfrac{-\left(-96\right)\pm \sqrt{\left(-96\right)^2-4\times \:16\left(-112\right)}}{2\times \:16}\\\Rightarrow x=7, -1$

So, time taken by the coin to hit the water is 7 seconds.

6 0

3 years ago

Find the height of a triangle with a base of 4 1/4 cm and an area of 5 5/16 cm squared

Paha777 [63]

Answer:

hb=2.5

Step-by-step explanation:

base = 4

area = 5

6 0

3 years ago

0.4x + 28.5 = 281 Solve for x.

mash [69]

Answer:

Step-by-step explanation:

281-28.5=252.5

252.5 divided by 0.4=631.25

X=631.25

6 0

3 years ago