:a/sin(A) = b/sin(B) = c/sin(C)a, b, c being the sides, A, B, C being the opposing angles of the sides. and remember, the sum of all angles in a triangle is 180°.so, JL/sin(90) = KL/sin(72)JL/1 = KL/sin(72)KL = JL × sin(72) = 10 × 0.951056516... == 9.51056516... ≈ 10JK/sin(L) = JL/sin(90) = JLJK = JL × sin(L)angle L = 180 - 90 - 72 = 18°JK = JL × sin(18) = 10 × 0.309016994... == 3.09016994... ≈ 3
In order to get the value of x you have to set x by itself subtract from both sides because the only way to get rid of a positve its with a negative now you have 5x=6, now divide 5 from both sides because the only way to get rid of a multiplication is with a division, this will give you the final answer of x=6/5
