6 subtract
the main number to get youre answer and 6 is what i got
COS A=0.8
Step-by-step explanation:
2^6+8^2
100
sqrt(100)=10
8/10
0.8
The half-life of the radioactive substance is 67.95 hours.
Answer:
<em>The height of the monument is 124.8 ft</em>
Step-by-step explanation:
<u>Right Triangles</u>
The ratios of the sides of a right triangle are called trigonometric ratios. The tangent ratio is defined as:

The figure attached below shows the different distances involved in the problem. We heed to find the value of h, the height from Daniel's eyes. Then we'll add it to the 6 ft where his eyes are located from the ground.
Taking the angle of 68° as a reference:

Solving for h:

Calculating:
h = 118.8 ft
The height of the monument is 118.8 ft + 6 ft = 124.8 ft