Question #8a4ec
1 Answer
It's impossible to answer this specifically without the diagram, but use the Law of Cosines.
Explanation:
If you have distances DP and DQ as well as the angle between them (or "Side-Angle-Side"), you can use the Law of Cosines to calculate the third distance.
The Law of Cosines states
In this case, we'd use
Why do we use the Law of Cosines? It'd be nice if we could use the Pythagorean formula,
If we use
The Law of Cosines is just a generalized version Pythagorean formula!