Answer:
b
Step-by-step explanation:
Using the trigonometric identity
secx = 
and cos60° = 
Given
sec [ 
] ← evaluate bracket
= sec60°
= 
= 
= 2 → b
Answer: 4°F
Step-by-step explanation:
Answer:
42
Hope this helps ;)
Step-by-step explanation:
Answer:
Raul's age is 15 years.
Step-by-step explanation:
r represents Raul's age.
The number of years from the start of the Great Depression to the first presidential election of Richard Nixon is six years less than three times Raul's age.
The first presidential election happened 39 years after the Great Depression and six years less than three times Raul's age is 3r - 6.
Therefore, 3r - 6 = 39
Add 6 to both sides.
3r = 45
Divide both sides by 3.
r = 15
Hence, Raul's age is 15 years.
ANSWER
EXPLANATION
The volume of the cone is
The height of the is 6 inches.
We put the values into the volume of cone to get.
Divide through by 2π.
The expression on the LHS is a perfect square trinomial.
