Given that ZCFESZCFA and mZCFB= 68°, find mZAFB.
A. 20°
B. 21°
C. 220
D. 23°

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.

Find two numbers if their sum is 91 and the ratio is 6: 7?

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label?