Verify the identity.sin(? - ?) cos(? + ?) = sin ? cos ? - sin ? cos ?
What will be an ideal response?
sin(? - ?) cos (? + ?) = (sin ? cos ? - cos ? sin ?)(cos ? cos ? - sin ? sin ?) 
= sin ? cos ? - sin ? cos ?
You might also like to view...
Use the Gauss-Jordan method to find A-1, if it exists.A = 
A. 
B. 
C. 
D. Does not exist
Solve the problem. Express the answer in scientific notation to two decimals unless requested otherwise.The earth is approximately 92,900,000 miles from the sun. If 1 mile = 1.61 × 103 m, what is the distance to the sun in meters?
A. 1.50 × 1010 m B. 5.7 × 10-10 m C. 1.50 × 1011 m D. 5.7 × 1010 m
Simplify.-4(x + 9)
A. -4x - 36 B. -4x + 9 C. -4x + 36 D. x - 36
Solve the problem.The height h of a ball thrown is given by 
, where x is the horizontal distance traveled and both measurements are in feet. At what horizontal distances will the height of the ball be more than 
(Round distances to the nearest tenth of a foot, if necessary.)
A. 5.9 ft < x < 25 ft B. 5.9 ft < x < 19.1 ft C. 0 ft < x < 5.9 ft or 19.1 ft < x < 25 ft D. 0 ft < x < 19.1 ft