Question

Which of the formula(s) is most likely to help you relate side(s) to an angle?

-Law of Cosines.
-K=1/2ab sinC.
-Law of Sines.
-Hero's Formula.

Answer 1

Law of sines

Answer 2

Law of cosine !?

Answer 3

what is the difference ?

Answer 4

Does anyone know about the second one

maybe it's from property of triangles ?

Answer 5

if you know what those laws are, you will easily understand the difference.

Answer 6

Both Sine and Cosine laws

Answer 7

yes sines and cosines laws

Answer 8

Chenna is such an retrice lol

Answer 9

if you dont mind your language you ll get your retricekicked out of this earth.

Answer 10

that would be a really hard kick ;)

Answer 11

what? o.O

Answer 12

Given angles: phi, theta, rho.
Given sides: alpha,beta,gamma (opposite respective angles)
The law of sines:
\[\frac{\sin(\phi)}{\alpha}=\frac{\sin(\theta)}{\beta}=\frac{\sin(\rho)}{\gamma}\]
The law of cosines is:
\[\gamma^2=\alpha^2+\beta^2-2\alpha \beta \cos(\rho)\]
I was just saying, you don't have to have such a condescending, "why are you so ignorant" tone.

Answer 13

@ishaan the second one is the formula for the area of a triangle.
\[area = \frac{1}{2}absin(C)\]
works if you have two sides and the angle in between them.

Answer 14

oh thanks

Answer 15

its really waste of time to want to help you guys with people like 'malevolence19' around here. first learn manners and respecting others, then learn maths or physics or any other subject.

Answer 16

You're level 11. I've obviously helped more people than you. With your little snarky remarks, why don't you take yourself to the MIT groups. I'm sure you'll get alone with them fine.

Answer 17

joemath the question amistre posted is there something creepy about it I don't know.. you might want to check it

Answer 18

sure thing~

Answer 19

Just because you helped more people does not make you any great. As long you don't respect others others wont respect you. So first learn how to behave before you teach others anything.
And you might have helped more because you are here for a long time. I had joined this group just yesterday.

Answer 20

I've been here for about 2 months. 2 weeks of that being away from my PC. So 6 weeks. I respect others, you talk down to them.

Answer 21

All malevolence is trying to say is that your tone was a little condescending. While things my be "easily seen" or "trivial" to you, they are not to the person asking the question. It might be better if you leave those words out of your responses.

Answer 22

Precisely.

Answer 23

chenna what malevolence said was quite right...I guess you are south Indian..and most probably new to all this ..(No offence ) but you are interpreting it wrong. Just leave this.