Home
Class 12
MATHS
Show that a cos^(2) "" (A)/( 2) + b cos^...

Show that `a cos^(2) "" (A)/( 2) + b cos^(2) "" (B)/(2) + c cos^(2) "" (C )/(2) = s + (Delta )/ (R )`.

Promotional Banner

Topper's Solved these Questions

  • IPE:MAY-2015[TS]

    SRISIRI PUBLICATION|Exercise SECTION - C|4 Videos

  • IPE:MAY-2015[TS]

    SRISIRI PUBLICATION|Exercise SECTION - C|4 Videos

  • IPE:MAY-2015[AP]

    SRISIRI PUBLICATION|Exercise SECTION - C|7 Videos

  • IPE:MAY-2016 (AP)

    SRISIRI PUBLICATION|Exercise SECTION-3|7 Videos

Similar Questions

Explore conceptually related problems

Delta = 4 R r cos ""( A) /(2) cos ""( B)/(2) cos "" ( C) /(2)

If A, B , C =pi, then prove that cos ^(2). (A)/(2)+ cos^(2). (C)/(2)- cos^(2). (C)/(2)=2(cos. (A)/(2) cos. (B)/(2)sin. (C)/(2))

If a cos ^(2) "" (C )/(2) +c cos ^(2) "" (A)/(2) = (3b)/( 2 ) " then " a,b,c are in

Show that (b+c) cos ((B+C)/( 2)) =a cos ((B-C)/( 2))