Question

Write an equation that could be used to find the value of b.



Answer

382 = 22 + 32 – 2(2)(3)(cos b°)

b2 = 22 + 32 – 2(2)(3)(cos 38°)

22 = b2 + 32 – 2(b)(3)(cos 38°)

32 = 22 + b2 – 2(2)(b)(cos 38°)

Answer 1

ummm..we would appreciate if there is a picture of some sort.

Answer 2

alright :) hold on one sec

Answer 3

@dg98 :)

Answer 4

oh that's easy! ok so cosine law

Answer 5

a^2=b^2+c^2-2bc cosA

Answer 6

or for this question...b^2=c^2+a^2-2ac cosB

Answer 7

=9+4-12cos38

Answer 8

oops i was solving it.
b^2=3^2+2^2-2(3)(2)cos38

Answer 9

thanks!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 10

you're welcome! :)