Question

Find the value of x in the triangle shown below 3.5 4 3.5 x• 55•

Answer 1

It is 70

Explanation:

Khan Academy

Answer 2

Explanation:

Since this is not a right triangle, we will use the Law of Sines. For us that looks like this:

`(sin55)/(3.5) =(sinx)/(4)` and cross multiply to get

4sin55 = 3.5sinx and solve for sinx:

`sinx=(4sin55)/(3.5)` so

sinx = .9361737 Use the 2nd button on your calculator and the sin button to find that the angle

x = 69.4°. Not sure how you need it rounded. It's actually 69.4186°