Use a sum-to-product identity to rewrite the expression.cos 18° - cos 24°
A. -2(cos (21.0°) sin (-3.0°))
B. -2(cos (21.0°) cos (-3.0°))
C. -2(sin (21.0°) sin (-3.0°))
D. -2(sin (21.0°) cos (-3.0°))
Answer: C
You might also like to view...
Express the symbolic statement ~p in words.p: Lake Champlain is one of the Great Lakes.
A. It is true that Lake Champlain is one of the Great Lakes. B. Lake Champlain is not one of the Great Lakes. C. It is not true that Lake Champlain is not one of the Great Lakes D. Lake Champlain is truly one of the Great Lakes.
Refer to the weighted voting system 
and the Banzhaf definition of power. (The five players will be called P1, P2, P3, P4, and P5.)In this voting system,
A. P3 and P4 have the same power. B. P3 has twice as much power as P4. C. P3 has four times as much power as P5. D. P3 has three times as much power as P4. E. none of these
If the height of a right circular cone is three times the radius of the base, r, then the slant height of the cone is
(a) r ?10 (b) 2r (c) 2r ?2 (d) r ?2 (e) There is not enough information given to find the slant height.
Find the missing quantities. If there is no operating loss or absolute loss, write "none."
A. Operating exp = $40.24 Operating loss = $29.83 Absolute loss = $10.41 B. Operating exp = $10.41 Operating loss = $9 Absolute loss = $1.41 C. Operating exp = $9 Operating loss = $10.41 Absolute loss = $1.41 D. Operating exp = $9 Operating loss = $1.41 Absolute loss = $10.41