Asked by Don

sin45cos25 + cos45sin25 = ??

a. cos70
b. sin70
c. cos20
d. sin 20

which answer is correct ??
Answered by Damon
sin a cos b + cos a sin b =
you do this one
Answered by Don
= sin (a+b) = sin 70
Is that right Damon ?
Answered by Damon
Yes, correct
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