Village B is 7km due south of village A and village C is 9km due south B. Village D is 8km from A and is due east of B.
Find the distance of D from (a)B (b)C
2 answers
Show workings
Draw the diagram and review the Pythagorean Theorem.
DB^2 = 8^2 - 7^2
DC^2 = 9^2 + DB^2
DB^2 = 8^2 - 7^2
DC^2 = 9^2 + DB^2