Question

evaluate the following (1) sin78cos18 _ cos78 sin 18

Answer 1

HEY BUDDY....

HERE'S THE ANSWER.....

_________________________

We know...

Sin ( A - B ) = sin A . cos B - cos A . sin B

So
=> sin78 cos18 - cos78 sin 18

=> Sin ( 78 - 18 )

=> Sin ( 60 )

=> √3 / 2

HOPE HELPED..

#@®¥@n#

:-)