If the triangle is not right-angled, and there is not a matching pair, you will need the _____________ Rule. Need help, ASAP please and thank you so much!

Question

asked Jul 11, 2020 152k views

1 Answer

Nicolas Degen · Answer 1 · 2020-07-16T19:02:06+0000

Answer:

Cosine

Explanation:

If the triangle is not right-angled, and there is not a matching pair, you will need the Cosine Rule..

and the formula used will be:
a^2 = b^2 + c^2 - 2 b c cos A

In the opposite case if the triangle is not right-angled, and there is a matching pair, you will need the Sine Rule..