Question

HELP MULTIPLE CHOICE. WILL BECOME FAN.

Answer 1

@amistre64 can you help me on these too? It just is confusing for me how to set up the equations..

Answer 2

b can be found by cosine rule ie
$$\cos B=\frac{a^2+c^2-b^2}{2ac}$$

Answer 3

I can't seem to find the side length?

Answer 4

@BAdhi

Answer 5

use the equation all the values are provided except the value of b

Answer 6

I get 0.75 = 1 - b ^ 2? HELP PLEASE :C

Answer 7

$$2ac \cos B= a^2+c^2-b^2\\
2(12)(13)(\cos 41)=12^2+13^2-b^2\\
b^2=12^2+13^2-235.46$$

Answer 8

I got the 3rd one?

Answer 9

What about the next question I had? @BAdhi

Answer 10

your know all the sides of the triangle now find the angles using cosine rule

Answer 11

alright