Cotangent is one over tangent
1/(4/7)
Answer 7/4
Based on your comment about the question, You would have to subtract 55 - 12, to find the remaining amount to get 12 up to 55, which would be 43 ;D
Answer:
17 feets 3 inches
Step-by-step explanation:
Given :
Converting the parameters to inches only:
Recall:
1 feets = 12 inches
Man's height : 5 feets 9 inches = (12 *5) + 9 = 69 inches
Man's shadow : 3 feets 6 inches = (12 * 3) + 6 = 42 inches
Tree's shadow : 10 feets 6 inches = (12 * 10) + 6 = 126 inches
(Tree's height / tree's shadow) = (man's height / man's shadow)
Let tree's height = x
x / 126 = 69 / 42
Solve for x
42x = 126 * 69
42x = 8694
x = 8694 / 42
x = 207 inches
207 / 12 = 17 feets 3 inches
The answer is 21.
18 classrooms x 35 students in each classroom = 630 total students
630 total students / 30 students in each classroom = 21
