Complete the identity.1 - cos (2?) + cos (8?) - cos (10?) = ?
A. 4 sin ? sin (4?) sin (5?)
B. 4 cos ? cos (4?) cos (5?)
C. 4 sin ? cos (4?) sin (5?)
D. 4 cos ? cos (4?) sin (5?)
Answer: C
Mathematics
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Solve.Avegail needs to determine the distance at certain points across a lake. Her crew and she are able to measure the distances shown on the diagram below. Find how wide the lake is to the nearest tenth of a meter.
A. 8.4 m B. 115.3 m C. 143.2 m D. 70 m
Mathematics
Answer yes or no.Let n = 33 ? 51 ? 132. Is 34 ? 131 = 1053 a factor of n?
A. Yes B. No
Mathematics
Provide an appropriate response.To find principal, you would use the formula:
A. 
B. 
C. 
D. 
Mathematics
Determine whether the following is a statement. If it is, then also classify the statement as true or false.2.4 = 5.2
A. Not a statement B. True statement C. False statement
Mathematics