Question

Solve the triangle. Round lengths to the nearest tenth and angle measures to the nearest degree. a = 7, b = 7, c = 5

Answer 1

You know that A = B (because a = b) and you also know that A > C (because a>c).
That narrows it down to choices a and b.

Do you know the law of sin yet?

Answer 2

no

Answer 3

you will need the law of cosines 2 find to angles.... and then you can use angle sum of a triangle to find the 3rd angle...

Answer 4

well looking at the question, the triangle is isosceles... so you only need to find 1 angle....the one opposite the shortest side and then use angle sum of a triangle

Answer 5

Ok, working this out..........

Answer 6

this is what you need to do...

Answer 7

I got B.

Answer 8

great, well done...

Answer 9

thanks

Answer 10

I found the answer too - well a bit late. :-)