Home
Class 11
MATHS
If none of the denominators is zero, pro...

If none of the denominators is zero, prove that.
`((cosA+cosB)/(sinA-sinB))^(n)+((sinA-sinB)/(cosA+cosB))^(n) = {(2cot^(n)((A-B)/(2)), if n "is even"),(0, if n "is odd"):}`.

Promotional Banner

Topper's Solved these Questions

  • MARCH - 2016 (TELANGANA)

    VIKRAM PUBLICATION ( ANDHRA PUBLICATION)|Exercise Section -C (Long answer type quesitons)|7 Videos

  • MARCH - 2016 (TELANGANA)

    VIKRAM PUBLICATION ( ANDHRA PUBLICATION)|Exercise Section -C (Long answer type quesitons)|7 Videos

  • MARCH - 2016 (ANDHRA PRADESH)

    VIKRAM PUBLICATION ( ANDHRA PUBLICATION)|Exercise Section- C(Long answer type questions)|7 Videos

  • MATHEMATICAL INDUCTION

    VIKRAM PUBLICATION ( ANDHRA PUBLICATION)|Exercise Exercise 2 (a)|15 Videos

Similar Questions

Explore conceptually related problems

((cosA+cosB)/(sinA-sinB))^(2012)+((sinA+sinB)/(cosA-cosB))^(2012)=

A+C=2B then (cosC-cosA)/(sinA-sinC)=

If f: N to W is such that f(n) = {{:(n/2, "if n is even"),(0,"if n is odd"):} , then f is

Prove that C_(0)^(2)-C_(1)^(2)+C_(2)^(2)-C_(3)^(2)+….+(-1)^(n).C_(n)^(2)={{:((-1)^(n//2)""^(n)C_(n//2)",","if n is even"),(" "0" ,","if n is odd"):}

If sinA+sinB=l and cosA-cosA-cosB=m , then cos(A-B)=

If A+B+C=180^(@) then prove that the following: (cosA)/(sinBsinC)+(cosB)/(sinCsinA)+(cosC)/(sinAsinB)=2

If A,B,C are angles in a triangle , then prove that cosA+cosB+cosC=1+4sin. (A)/(2)sin. (B)/(2) sin. (C)/(2)

If n is a positive integer prove that (1+i)^(2n)+(1-i)^(2n)=2^(n+1)cos((n pi)/(2))

If |{:(cos(A+B),-sin(A+B),cos2B),(sinA,cosA,sinB),(-cosA,sinA,cosB):}|=0 then B =