To solve this problem you must apply the proccedure shown below:
1- You have that the laddder makes an angle of 
with the ground and the top of the ladder reaches 
.
2- Therefore, you have:
Where:
3-You must substitute values and solve for the lenght, as following:
Therefore, the answer is: 
Answer:
98
Step-by-step explanation:
Answer:
200 feet
Step-by-step explanation:
I believe you can use cosine 60° (which is 0.5) and set it equal to x/400
.5 = <u> x </u>
400
x = 200
The answer would be 1024<span>x5</span>−<span>1
</span><span><span><span>
(<span><span>2x</span><span>(2)</span></span>)</span>5</span>−1</span><span>=<span><span><span>1024<span>x5</span></span></span>−<span>1
I hope this helped ^^</span></span></span>
