Anne is 3m away from Ishan at a bearing of 100 degrees. Katniss is 7m away from Anne at a bearing of 260 degrees. By plotting positions of Anne and Katniss ( using a scale of 1cm: 1m), estimate the distance of Katniss from Ishan.

Use pythagorean’s theorem and find the missing side lengths of the two smaller triangles and add them together
13^2 - 12^2 = 5
15^2 - 12^2 = 9
5+9 = 14
14 is the length of each side of the square
14^2 + 14^2 = 19.8
19.8 is the diagonal length of the inside if the square