Answer:

Step-by-step explanation:
From the question we are told that:
Angle of F 
Length of 
Length of 
Generally the equation for Angle D
is mathematically given by
Since
.The triangle is a right angle Triangle
Therefore




Answer:
The answer is C
Step-by-step explanation:
Answer:
Commutative property of addition, or just commutative property.
Step-by-step explanation:
The commutative property states that the order of numbers in addition does not matter, which is shown in the problem.
See the picture attached (excuse the cheesy drawing skills)
T means Tails, H means Heads