2. (a) Use an isometry to find angle ABC when A = 0, B = ½, and C = 벌. (b) Now compute ACB, and thus find the angle sum and area of the triangle.

While in India, after landing in Daman, we are going to visit New Delhi and the Taj Mahal inAgra (just outside of Lucknow). These three cities form a triangle. The distance betweenNew Delhi and Daman is 719.5 miles. The distance between Daman and Lucknow is 457.5miles. The distance between Lucknow and New Delhi is 519.7 miles. Find the angle betweenDaman –Lucknow - New Delhi. (Draw relevant diagram)

Make all obvious simplifications.

Tamlin and Roshak are each standing in a field, 1340 meters apart. Moridan is in the parking lot, 2.43 km from Tamlin, and 1.71 km from Roshak. From Tamlin's perspective, at what angle are Roshak and Moridan apart?