Question

The length of the ladder making an angle of 45 with a wa and whose foot is 7m away from
the wall is: 12 (712 (c) 143 (0) 14​

Answer 1

Answer:

9.9m

Step-by-step explanation:

Length of the ladder say, x

cos 45=7/x.

therefore, x=9.899 or 9.9m

Answer 2

Answer:

let the length of the ladder be x

$\cos(45) = \frac{7}{x} \\ \frac{1}{ \sqrt{2} } = \frac{7}{x} \\ x = 7 \sqrt{2}$

x=9.899