Establish the identity.1 + 
sin(2?) = 
What will be an ideal response?
= sin2 ? + sin ? cos ? + cos2 ? = 1 + sin ? cos ? = 1 + 
sin(2?)
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Solve the problem.Use Newton's Law of Cooling to find the temperature in the following case. A loaf of bread is removed from an oven at 
and cooled in a room whose temperature is 
. If the bread cools to 
in 20 minutes, how much longer will it take the bread to cool to 
A. ? 16 minutes B. ? 23 minutes C. ? 3 minutes D. ? 4 minutes
Solve the problem.If a plane can travel 350 miles per hour with the wind and only 250 miles per hour against the wind, find the speed of the wind and the speed of the plane in still air.
A. Plane: 300 mph, wind: 60 mph B. Plane: 50 mph, wind: 300 mph C. Plane: 400 mph, wind: 50 mph D. Plane: 300 mph, wind: 50 mph
Write the expression in the standard form a + bi.i11
A. 1 B. i C. -1 D. -i
Solve using the multiplication principle.-27.3 = 9.1z
A. - 
B. -3
C. -18.2
D. -24.3