Question

hey what's up everybody and goodmorning to all my friends...

If cosA=3/5 and cosB= 3/5, where A and B are positive acute angles, then cos[(A-B)/2] is ....
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Answer 1

Answer:

so answer is 7/5√2

i hope u got the answer and thank u to giving me chance to answer

Answer 2

Answer:

gud mrng ..................