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3 years ago

Please help! i will reward brainliest

Mathematics

2 answers:

drek231 [11]3 years ago

6 0

Answer:

37.9 degrees

Step-by-step explanation:

Using the law of sines, $\frac{\sin(m\angle C)}{21}=\frac{\sin(47^\text{o})}{25}$ . It follows that $\sin (m\angle C) = \frac{21\sin(47^\text{o})}{25} \approx 0.6143371$ . Therefore, $m\angle C = \sin^{-1}(0.6143371)=37.9^\text{o}$ .

Semmy [17]3 years ago

6 0

The answer 39.7. I not all the way sure

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Find the distance between these points.

Lena [83]

Answer:

$\sqrt{85}$

Step-by-step explanation:

Calculate the distance d using the distance formula

d = √ (x₂ - x₁ )² + (y₂ - y₁ )²

with (x₁, y₁ ) = (0, 4 ) and (x₂, y₂ ) = (- 6, - 3)

d = $\sqrt{(-6-0)^2+(-3-4)^2}$

= $\sqrt{(-6)^2+(-7)^2}$

= $\sqrt{36+49}$

= $\sqrt{85$ ← exact distance

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3 years ago

In Exercises 15 and 16, tell whether the triangle with the given side

Nata [24]

15. 10 cm, 10 cm, V200 cm : Right Angled Triangle

16. 9 in., 16 in., 25 in. : Not a right angled triangle

Step-by-step explanation:

In order to check whether the given sides form a right angled triangle, we check if the sum of squares of two shorter sides is equal to the square of third longest side.

15. 10 cm, 10 cm, V200 cm

$The\ shorter\ sides\ are\ 10cm\ and\ 10cm\\Let \\a=10\\b=10\\c=\sqrt{200}So,\\c^2=a^2+b^2\\(\sqrt{200})^2=(10)^2+(10)^2\\200 = 100+100\\200 = 200$

The triangle is a right angled triangle.

16. 9 in., 16 in., 25 in.

Here

a = 9 in

b=16 in

c=25 in

So,

$c^2=a^2+b^2\\(25)^2=(9)^2+(16)^2\\625=81+256\\625=337$

The given triangle is not a right angled triangle.

Keywords: Triangle, Right angled Triangle

Learn more about triangle at:

#LearnwithBrainly

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Step-by-step explanation:

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