Step-by-step explanation:
Using Trigonometry,
Let the height be AD, angle containing 90° be B and the angle containing 65° be C, respectively.
cos 30° = AD/40
AD= 40√3/2 = 20√3.
<DAC = 25°.
cos 25° = AD/AC
0.90 = 20√3/AC
AC = 38.49. is the value of x.
please try to understand the marking accordingly.
hope this helps you.
