Two sides of a right triangle ABC (C is the right angle) are given. Find the indicated trigonometric function of the given angle. Give exact answers with rational denominators.Find cos A when a = 
and c = 11.
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Find the average value of 
over the given region.
over the cube in the first octant bounded by the coordinate planes and the planes 
, 
, 
A. 
B. 
C. 243
D. 
Mathematics
Find an angle ? between 0° and 90° having the specified function value. Round your answer to the nearest hundredth of a degree.sin ? ? 0.2119
A. 11.96° B. -12.23° C. 102.23° D. 12.23°
Mathematics
Use the information given about the angle ? to find the exact value of the indicated trigonometric function.cot ? = -3, sec ? > 0Find cos 
.
A. -
B. 
C. 
D. -
Mathematics
Perform the conversion. Round to the nearest hundredth when necessary.13.8 m to ft
A. 12.61 ft B. 4.21 ft C. 45.26 ft D. 15.04 ft
Mathematics