Find : cos C

Find b cos ^(2) ""( C ) /(2) + c cos ^(2) "" ( B ) /(2 )

In a right angle triangle ABC, right angle is at B if tan A=sqrt3 then find the value of Sin A cos C + cos a sin c

If a = 4, b =5 , c = 7 , find cos "" ( B) /(2)

( cos A) /( a) + ( cos B) /( b ) + ( cos C ) /( c )

In Delta ABC , a( b cos C - c cos B) =

In DeltaABC , " find " b cos ^(2).(C)/(2)+c cos^(2).(B)/(2)

Find e^(ax) cos (bx+c) dx on R , where a,b,c are real number and b ne 0 .