Question

587. How tall is an isosceles triangle, given that its base is 30 cm long and that both of its base angles are 72 degrees? 595. To the nearest tenth of a degree, find the sizes of the acute angles in the 5-12-13 triangle and in the 9-12-15 triangle. This enables you to calculate the sizes of the angles in the 13- 14-15 triangle. Show how to do it, then invent another example of this sort.

Answer 1

* gsoodu tri angle, baje angle a가 30 วุโ Take tangle AD B (2 72 90 SnigI IS 16.18. 15. 382