Answer :
You can use the cos Ф = base / hypotenuse.
In this case, you have h = 42/cos 35 (approx. 0.819)
h = 42/0.819 = 51.3
To the nearest whole number, the length of the ladder is 51 feet.
In this case, you have h = 42/cos 35 (approx. 0.819)
h = 42/0.819 = 51.3
To the nearest whole number, the length of the ladder is 51 feet.