Home
Class 12
MATHS
In DeltaABC, show that (1-cosA+cosB+cosC...

In `DeltaABC,` show that `(1-cosA+cosB+cosC)/(1-cosC+cosA+cosB)=tan(A/2) cot (C/2).`

Promotional Banner

Topper's Solved these Questions

  • TRIGONOMETRIC FUNCTIONS AND IDENTITIES

    ARIHANT MATHS ENGLISH|Exercise Exercise For Session 11|10 Videos

  • TRIGONOMETRIC FUNCTIONS AND IDENTITIES

    ARIHANT MATHS ENGLISH|Exercise Exercise (Single Option Correct Type Questions)|52 Videos

  • TRIGONOMETRIC FUNCTIONS AND IDENTITIES

    ARIHANT MATHS ENGLISH|Exercise Exercise For Session 9|10 Videos

  • TRIGONOMETRIC EQUATIONS AND INEQUATIONS

    ARIHANT MATHS ENGLISH|Exercise Exercise (Questions Asked In Previous 13 Years Exam)|12 Videos

  • VECTOR ALGEBRA

    ARIHANT MATHS ENGLISH|Exercise Exercise (Questions Asked In Previous 13 Years Exam)|9 Videos

Similar Questions

Explore conceptually related problems

In DeltaABC , prove that: (c-bcosA)/(b-c (cosA))=(cosB)/(cosC)

Prove that cosA+cosB+cosC=1+r/R

Prove that cosA+cosB+cosC=1+r/R

In DeltaABC , prove that: (1+cosA.cos(B-C))/(1+cosC.cos(A-B))=(b^(2)+c^(2))/(a^(2)+b^(2))

In DeltaABC , prove that: b(cosA-cosC)=2(c-a)cos^(2)B/2

If A+B+C=pi , prove that : cos2A+cos2B+cos2C=-1-4cosA cosB cosC

In DeltaABC , prove that: a(cosC-cosB)=2(b-c)cos^(2)A/2

In any DeltaABC , prove that (1+cos(A-B)cosC)/(1+cos(A-C)cosB)=(a^(2)+b^(2))/(a^(2)+c^(2))

In A B C , prove that cosA+cosB+cosClt=3/2dot

(a+b+c)(cosA+cosB+cosC)