82.280 is the answer to that problem
Answer:
10
Step-by-step explanation:
The first thing to do would be to find how many 1/4 cups are in the 1 cup. Divide 1 by 1/4 and you'd get 4.
Just multiply 2 1/2 by 4 and you get 10
No, the correct identity is

. It is obtained by dividing the both sides of the Pythagorean Trigonometric Identity by cos²(x):
Cos(7)=5.1/x
X=5.1/cos(7)
X=5.1/0.99
X=5.15
The length is 5.15 ft