Question

Bryant collects a set of 20 values that represent the lengths of worms he found in the garden. The variance of the set of values is 36.
What is the standard deviation from the mean? Round the answer to the nearest tenth if necessary.
4.5
6
14
15.5

Answer 1

Answer:we know,

tan 45° = 1, cos 30° = √3/2, sin 60° = √3/2

now, put the values

2(1)² + (√3/2)²- (√3/2)² = 2.

Step-by-step explanation: