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4 years ago

Can the sine rule relationship in trigonometry be used with non right angled triangle

Mathematics

2 answers:

Reika [66]4 years ago

7 0

Answer:

Below

Step-by-step explanation:

You can use it if you added a hight.

When you a hight you are creating a right triangle. If not you cannot use directly

qaws [65]4 years ago

4 0

Answer:

Yes

Step-by-step explanation:

If you mean just sine in general, then yes, it can be used with other triangles.

If you mean $sin=\frac{opposite}{hypotenuse}$ , then there has to be a right triangle. But in other cases, sine is used to find missing sides as well as angles in triangles that are not right-angled.

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180 is 25% of what number? show ur work

horsena [70]

Since 25% is 1/4, then 180 times 4 is 720.
720 is your answer.

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3 years ago

Chapter : Circles 1 question

erica [24]

We can solve this question in 2 ways: either using degrees or converting the degrees into radians.

Since, the question says degrees itself and there is no specification of using radians only, so I have solved it using degrees itself.

Part (a):

Perimeter of sector ORS = 2*Radius + Arc RS = 2*21 + $60* \frac{ \pi }{180} *21 = \frac{ \pi }{3} *21 = 7 \pi$

Part (b):

Area of sector ORS = $\frac{60}{360} * \pi * 21^{2} = \frac{1}{6} * \pi *21*21= \frac{147}{2} \pi$

Area of sector POQ = $\frac{36}{360} * \pi * 14^{2} = \frac{1}{10} * \pi * 196 = \frac{196}{10} \pi$

Thus, area of shaded region
= Area of sector ORS - Area of sector POQ

= $\frac{147}{2} \pi - \frac{196}{10} \pi = \frac{735 - 196}{10} \pi = \frac{539}{10} \pi = 53.9 \pi$

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3 years ago

Which line is perpendicular to the line whose equation is 5y + 6 = -3x?

Lynna [10]

Answer: B

Step by Step

5y + 6 = -3X

5y = -3X - 6

Y = -3/5X -6/5

Perpedicular is the flip of your slope so -3/5 becomes 5/3X

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3 years ago

Anyone else have a bully and your bully makes fun of you because your adopted?

NikAS [45]

Answer:

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Step-by-step explanation:

Well to be honest I think you should just treat him the same say the same things you would normallily say when you didnt know he waS

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3 years ago

Read 2 more answers

Hi, I am in desperate need of help in math. I am utterly clueless when it comes to math. Civics on the other hand. I need help w

natita [175]

First your going to use commutative property to reorder the terms , so it would be
5x^4-x-35x^3+7 , then your going to factor out x & -7 from the equation once you factor that out you should have x(5x^3-1)-7(5x^3-1) after you got that your going to factor out 5x^3-2 and get the answer (x-7)(5x^3-1) which is your final answer.

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3 years ago