+0

The correct ratio to find x is (Trigonometry)

0
593
5
+61

May 25, 2015

#2
+1309
+13

to make life easier, ill do it: $$\sqrt189$$ is the answer

May 25, 2015

#1
+1309
+13

6^2 + x^2 = 15^2. now you can solve that by yourself or on the calc

May 25, 2015
#2
+1309
+13

to make life easier, ill do it: $$\sqrt189$$ is the answer

AWESOMEEE May 25, 2015
#3
+101870
+5

And  √189  can be simplified as = √[3^3 * 7] = √[9 * 21] =  3√21

May 25, 2015
#4
+28065
+5

There is something odd about the diagram.

$$\underset{\,\,\,\,^{{360^\circ}}}{{sin}}{\left({\mathtt{72}}^\circ\right)} = {\mathtt{0.951\: \!056\: \!516\: \!295}}$$

$${\frac{{\mathtt{6}}}{{\mathtt{15}}}} = {\frac{{\mathtt{2}}}{{\mathtt{5}}}} = {\mathtt{0.4}}$$

!!!

.

May 25, 2015
#5
+101870
+5

Yeah, Alan......I hadn't noticed that....72°  is definitely not correct.....it would mean that the shortest side would be opposite the intermediate angle....impossible.....!!!

May 25, 2015