Verify that each equation is an identity.cos(4u) = 2 cos2(2u) - 1
What will be an ideal response?
cos(4u) = cos[2(2u)] = 2 cos2(2u) - 1
You might also like to view...
Provide an appropriate response.Gerald made a trip to his friend's house for a birthday party. His trip is shown below, where his distance (in miles) from home is graphed as a function of the hours past 2:00. Refer to the graph to answer the questions about his trip.(i) What time did he leave home?(ii) When did he realize he forgot his gift?(iii) How far from home was he when he realized he forgot his gift?(iv) What did he do about the forgotten gift?
A. (i) 2:00 (ii) 2:30 (iii) About 1 mile (iv) Bought one at a store on the way B. (i) 2:30 (ii) 2:45 (iii) About 4 miles (iv) Returned home C. (i) 3:00 (ii) 3:45 (iii) About 4 miles (iv) Mailed it later D. (i) 3:30 (ii) 3:45 (iii) About 1 mile (iv) Returned home
Solve the problem.Let u = 
. Find 2u.
A. 
B. 
C. 
D. 
Use the accompanying table to find the solutions to the given equation on 
csc ? - 
sec ? = 0
Y1 = 1/sin(X) -
/cos(X)
A. None B. 30°, 210° C. 90°, 180°, 270° D. 60°, 120°, 150°, 240°
Factor the GCF from the polynomial.4x7 - 28x5
A. 4x5(x2 - 7) B. 4x6(x - 7x) C. 4(x7 - 7x5) D. x7(4x2 - 28)