If in a triangleABC,1+cosAa+1+cosBb+1+cosCc=k2(1+cosA)(1+cosB)(1+cosC)abcthen k is equal to View Solution Prove that in a triangle ABC,cosB−cosCcosA+1=c−ba View Solution Doubtnut is No.1 Study App and Learning App with Instant Video Solutions for NCERT Class 6, Class 7...
In any triangleABC, prove that:1+cos(A−B)cosC1+cos(A−C)cosB=a2+b2a2+c2 View Solution In any triangleABC, prove that following:a(cosBcosC+cosA)=b(cosCcosA+cosB)=c(cosAcosB+cosC). View Solution Ifθis any real number, then, in a triangle ABC, prove that ...
Click here:point_up_2:to get an answer to your question :writing_hand:in a triangle abc prove that a3cosbcb3coscac3cosab 3abc
In mathematics, when a triangle has angles A, B, and C, and the sides opposite those angles have measures a, b, and c, respectively, we can determine the length of one of the sides of the triangle using the lengths of the other two sides, ...
In any triangle A B C , prove the projection formulaa=b cosC+c cosB ... 03:54 Prove that an angle inscribed in a semi-circle is a right angle usi... 03:05 If vec a.hat i= vec a.( hat i+ hat j)= vec a.( hat i+ hat j+ hat k) ... 02:27 Prove by vector method ...
With usual notations, if in a triangle A B C(b+c)/(11)=(c+a)/(12)=(a+b)/(13) , then prove that: (cosA)/7=(cosB)/(19)=(cosC)/(25)
For any triangle ABC, prove that acosA+bcosB+ccosC=2asinBsinC View Solution In any ΔABC, prove that : acosA+bcosB+ccosC=2asinBsinC View Solution In ΔABC, prove that: acosA+bcosB=(c)cos(A−B) View Solution Prove that acosA+bcosB+osC≤s. View Solution Prove that acosA+bcosB...
If inΔABC,cosAa=cosBb=cosCcandside a=2, then the area of the triangle is View Solution In a triangle ABC, a (b cos C - c cos B) = View Solution IN△ABC,cosC+cosAc+a+cosBb= View Solution In△ABC,2(bccosA−accosB−abcosC)= ...
ifcosA+cosB+cosC=1+4sin(A2).sin(B2).sin(C2)thencosA+cosB+cosC= View Solution In△ABC,a(cosB+sinBcot(A2))= View Solution Free Ncert Solutions English Medium NCERT Solutions NCERT Solutions for Class 12 English Medium NCERT Solutions for Class 11 English Medium ...
In anyΔABC, prove that :acosA+bcosB+ccosC=2asinBsinC View Solution In any triangleABC, prove that following:bcosB+ccosC=acos(B−C) View Solution In any△ABC, prove thata(cosB+cot(A2).sinB)=b+c. View Solution For any triangle ABC, prove thata(bcosC−ccosB)=b2−c2 ...