Home
Class 12
MATHS
Let cos(alpha+beta)""=4/5 and let sin (a...

Let `cos(alpha+beta)""=4/5` and let `sin (alpha+beta)""=5/(13)` where `0lt=alpha,betalt=pi/4` , then `t a n""2alpha=` (1) `(56)/(33)` (2) `(19)/(12)` (3) `(20)/7` (4) `(25)/(16)`

Promotional Banner

Similar Questions

Explore conceptually related problems

Let cos (alpha+beta) = 4/5 and sin(alpha-beta)=5/13 where 0<= alpha,beta<= pi/4 then find tan (2alpha)

If cos(alpha+beta)=4/5; sin(alpha-beta)=5/13 and alpha,beta lie between 0&pi/4 then find the value of tan2alpha

It cos(alpha+beta)=4/5,sin(alpha-beta)=5/(13)a n dalpha,beta lie between 0a n dpi/4 , prove that tan2alpha=(56)/(33)

It cos(alpha+beta)=4/5,sin(alpha-beta)=5/(13)a n dalpha,beta lie between 0a n dpi/4 , prove that tan2alpha=(56)/(33)

If cos(alpha+beta)=(4)/(5) and sin(alpha-beta)=(5)/(13) , where alpha lie between 0 and (pi)/(4) , then find that value of tan2alpha .

If sin (alpha + beta) = 4/5 , cos (alpha - beta) = (12)/(13) 0 lt alpha lt (pi)/(4), 0 lt beta lt (pi)/(4), find tan 2 alpha .

If sin(alpha+beta)=1 and sin(alpha-beta)=1/2 , where 0lt=alpha, betalt= pi/2 , then find the values of tan(alpha+2beta) and tan(2alpha+beta) .

If cos (alpha + beta) = (4)/(5), sin (alpha - beta) = (5)/(13) and alpha and beta lie between 0 and (pi)/(4) , find tan 2 alpha .

If sin (alpha + beta) = 4/5 , sin (alpha -beta) = (5)/(13), alpha + beta , alpha - beta being acute angles prove that tan 2 alpha = (63)/(16).

If sin^4alpha+cos^4beta+2=4sinalphacosbeta,0lt=alpha,betalt=pi/2 then find the value of (sinalpha+cosbeta)dot