Home
Class 11
MATHS
If sin alpha+sin beta=a\ a n d\ cosalpha...

If `sin alpha+sin beta=a\ a n d\ cosalpha-cosbeta=b ,` then `tan(alpha-beta)/2=` `-a/b` b. ` b/a` c. `sqrt(a^2+b^2)` d. none of these

Text Solution

AI Generated Solution

Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • TRIGONOMETRIC RATIOS OF COMPOUND ANGLES

    RD SHARMA ENGLISH|Exercise All Questions|149 Videos

Similar Questions

Explore conceptually related problems

If sinalpha+sinbeta=a\ and\ cosalpha-cosbeta=b , then tan((alpha-beta)/2)= a. -a/b b. -b/a c. sqrt(a^2+b^2) d. none of these

If sin alpha + sin beta=a and cos alpha+cosbeta=b then tan((alpha-beta)/2) is equal to

If sin alpha+sin beta=a and cos alpha-cos beta=b then tan((alpha-beta)/2) is equal to-

If sin alpha+sin beta=a\ a n d\ cosalpha+cosbeta=b , show that : sin(alpha+beta)=(2"a b")/(a^2+b^2)

If sin alpha+sin beta=a\ a n d\ cosalpha+cosbeta=b , show that : cos(alpha+beta)=(b^2-a^2)/(b^2+a^2)

If sinalpha+sinbeta=a and cosalpha+cosbeta=b prove that: cos(alpha-beta)=((a^2+b^2-2)/2)

If sinalpha+sinbeta=a and cosalpha+cosbeta=b prove that: cos(alpha-beta)=((a^2+b^2-2)/2)

If sinalpha-sinbeta=a and cosalpha+cosbeta=b then write the value of "cos"(alpha+beta) .

If sinalpha+sinbeta=a ,cosalpha+cosbeta=b=>sin(alpha+beta) =

sinalpha+sinbeta=a ,cosalpha+cosbeta=b=>sin(alpha+beta)

Home
Profile