Published by:
CGP EDU Academic Team
Published on: August 13, 2026
If cos ( α + β ) = 
; sin ( α − β ) = 
& α, β lie between 0 & 
, then find the value of tan 2 α .
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
( 
)
cos ( α + β ) = 
, sin ( α – β ) = 
, 
⇒ tan 2 α = tan {( α + β ) + ( α – β )}
= 
Here tan ( α + β ) = 3/4, tan ( α – β ) = 5/12
⇒ tan 2 α = 
= 
⇒ tan 2 α = 
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