Find the value of x, rounded to the nearest tenth.
Options:
1.) 9.7
2.) 12.5
3.) 13.0
4.) 10.0
![Find the value of x rounded to the nearest tenthOptions1 972 1253 1304 100 class=](https://us-static.z-dn.net/files/d62/f4a6507a63fac2458ca927f746770e2b.jpg)
Answer:
2.) 12.5
Step-by-step explanation:
Since this is a right triangle, we can use trig functions
cos 28 = adjacent side/ hypotenuse
cos 28 = 11 /x
Multiply each side by x.
x cos 28 = 11
Divide each side by cos 28.
x = 11/ cos 28
x=12.45827
Round to the nearest tenth.
x = 12.5