Use the information given about the angle ?, to find the exact value of the indicated trigonometric function.cos ? = 
, tan ?> 0 Find sin 2?.
A. 
B. 
C. - 
D. 
Answer: D
Mathematics
You might also like to view...
Find the area of a sector of a circle having radius r and central angle ?. If necessary, express the answer to the nearest tenth.r = 7.0 ft, ? = 
radians
A. 15.4 ft2 B. 51.3 ft2 C. 102.6 ft2 D. 7.3 ft2
Mathematics
Perform the indicated operation and write the answer in lowest terms. - 
÷ 5
A. 
B. - 
C. 
D. - 
Mathematics
Convert the angle from radians to degrees.
A. 60?° B. 3° C. 1° D. 60°
Mathematics
Find values for the variables so that the matrices are equal.
= 
A. x = 3; y = -3; z = 5 B. x = -3; y = 3; z = -5 C. x = 3; y = 5; z = 6 D. x = 6; y = 1; z = 5
Mathematics