Question

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!

Answer 1

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..