Use the product-to-sum or sum-to-product identities to find an identity for the given expression. cos 35° cos 49°
A. 
(-cos -14° - cos 49°)
B. 
(cos 14° + cos 84°)
C. 
(sin 14° - cos 84°)
D. 
(cos 14° + sin 84°)
Answer: B
Mathematics
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A. 
B. 
C. 
D. 
Mathematics
Find the missing length(s) in the right triangle. If necessary, round to the nearest tenth.
A. a = 29.4 cm; b = 17 cm B. a = 17 cm; b = 867 cm C. a = 17 cm; b = 29.4 cm D. a = 29.4 cm; b = 25.5 cm
Mathematics
Evaluate.4!
A. 24 B. 6 C. 48 D. 12
Mathematics
Solve the problem.The formula P = 14.7e-0.21x gives the average atmospheric pressure, P, in pounds per square inch, at an altitude x, in miles above sea level. Find the average atmospheric pressure for an altitude of 2.3 miles. Round your answer to the nearest tenth.
A. 11.0 lb/in.2 B. 9.1 lb/in.2 C. 8.4 lb/in.2 D. 7.8 lb/in.2
Mathematics