I figured it’s not a right triangle . I was thinking of using cosine rule but I’m not given an angle . @RDKGames
You can use the cosine rule because you can deduce the angle between the 14km and 9km lines. If you extend the 14km line a bit (dot the extension as it's not part of the actual line), then you can notice that the angle between this dotted line and the 9km line is 45 degrees. Think about it. Hence you can deduce the one in between the two sides.
You can use the cosine rule because you can deduce the angle between the 14km and 9km lines. If you extend the 14km line a bit (dot the extension as it's not part of the actual line), then you can notice that the angle between this dotted line and the 9km line is 45 degrees. Think about it. Hence you can deduce the one in between the two sides.