Question

In ∆ABC, if the lengths of a, b, and c are 22.5 centimeters, 18 centimeters, and 13.6 centimeters, respectively, what are m B and m C to two decimal places?

Answer 1

Sorry, what do you mean by m?

Answer 2

like angle

Answer 3

Does it look like this?

Answer 4

yes

Answer 5

Then all you have to do is use cos law. Do you know cos law?

Answer 6

no

Answer 7

Do you know sin law?

Answer 8

Or is this a right triangle?

Answer 9

If this is a right triangle we can use primary trig ratios.

Answer 10

m B = 89.68°, and m C = 37.19°



m B = 53.12°, and m C = 89.68°



m B = 89.68°, and m C = 53.13°



m B = 37.20°, and m C = 53.12°



m B = 53.13°, and m C = 37.19°

Answer 11

I can solve this question with cos law easily, but i need to know what you know in order to help you...