Home
Class 11
MATHS
If (2sinalpha)/({1+cosalpha+sinalpha})=...

If `(2sinalpha)/({1+cosalpha+sinalpha})=y`, then `({1-cosalpha+sinalpha})/(1+sinalpha)`=

A

`(1)/(y)`

B

y

C

`1-y`

D

`1+y`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Similar Questions

Explore conceptually related problems

If f(alpha,beta)=|(cosalpha,-sinalpha,1),(sin alpha,cosalpha,1),(cos(alpha+beta),-sin(alpha+beta),1)| , then a) f(300,200) ne f(400, 200) b)f(200,400) = f(200,600) c)f(100,200) =f(200,200) d)None of these

If A_(alpha)=[(cos alpha,sinalpha),(-sinalpha,cosalpha)] then A_(alpha) A_(beta) is equal to A) A_(alpha beta) B) A_(alpha +beta) C) A_(alpha - beta) D)None of these

int(1)/(sqrt(sin^(3)xsin(x+alpha)))dx,alpha!=npi,nin Z is equal to a) -2" cosec "alpha(cosalpha-tanxsinalpha)^(1//2)+C b) -2(cosalpha+cotxsinalpha)^(1//2)+C c) -2" cosec "alpha(cosalpha+cotxsin alpha)^(1//2)+C d) -2" cosec "alpha(sinalpha+cotxcosalpha)^(1//2)+C

The value of int_(0)^(pi//2)sin|2x-alpha|dx , where alphain[0,pi] , is a) 1-cosalpha b) 1+cosalpha c)1 d) cosalpha

The maximum value of (cosalpha_(1))(cosalpha_(2))...(cosalpha_(n)) under the restrictions 0lealpha_(1),alpha_(2),...,alpha_(n)lepi//2and(cotalpha_(1))(cotalpha_(2))...(cotalpha_(n))=1 is

If Delta=|(sinalpha,cosalpha,sin(alpha+delta)),(sinbeta,cosbeta,sin(beta+delta)),(singamma,cosgamma,sin(gamma+delta))| then Delta is independent of a) delta only b) alpha, beta, gamma only c) alpha,beta,gamma,delta d)None of these

If cosalpha+cosbeta=a,sinalpha+sinbeta=band alpha-beta=2theta , then (cos3theta)/(costheta) =

If cosalpha+cosbeta=0=sinalpha+sinbeta,cos2alpha+cos2beta is equal to a) -2sin(alpha+beta) b) 2cos(alpha+beta) c) 2sin(alpha-beta) d) -2cos(alpha+beta)

Evaluate |[cosalpha cosbeta,cosalpha sinbeta,-sinalpha],[-sinbeta,cosbeta,0],[sinalpha cosbeta,sinalpha sinbeta,cosalpha]|

If costheta=(cosalpha-cosbeta)/(1-cosalphacosbeta) . prove that one of the value of "tan"(theta)/(2) is "tan"(alpha)/(2)"cot"(beta)/(2) .