Solve the problem. Round your answer to one decimal place.The mean air temperature T (in degrees Fahrenheit), in Fairbanks, Alaska, is given by the function 
where n is the nth day of the year, 
What is the temperature in Fairbanks when n = 167?
A. 87.9°F
B. 55.6°F
C. 54.1°F
D. 58.6°F
Answer: D
Mathematics
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Find the exact value. Do not use a calculator.sin 495°
A. - 
B. 
C. - 
D. 
Mathematics
Find the exact value of the expression. Do not use a calculator.1 - sin2 30° - sin2 60°
A. 
B. 
C. 1
D. 0
Mathematics
Find all solutions if 
. Use exact values only. Verify your answer graphically.
?
?
A. 
, 
, 
, 
B. 
, 
, 
, 
C. 
, 
, 
, 
D. 
, 
, 
, 
E. 0, 
Mathematics
Prove the identity.
= 
What will be an ideal response?
Mathematics