Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 11-science Answered

Please help me with this question
Asked by | 19 Apr, 2010, 10:05: AM
Expert Answer

Using the following result,we can write,

tan(C+D) = (tanC + tanD)/(1 - tanC tanD)

tan2A = [tan(A+B) + tan(A-B)]/(1 - tantan(A+B) tan(A-B)) = (x+y)/(1 - xy)

Similarly,

tan2B = [tan(A+B) - tan(A-B)]/(1 + tan(A+B) tan(A-B)) = (x-y)/(1 + xy)

Regards,

Team,

TopperLearning.

Answered by | 19 Apr, 2010, 01:53: PM
Multiple Choice Questions Practice Test Subjective Questions Webinar Subjective Questions Pre Board Assessment

Concept Videos

Application Videos

Answered Unanswered My Questions My Answers
CBSE 11-science - Maths
if u = [2,3,4.....,11] A=[2,4,7] B = [ 3,5,7,9,11] C =[7,8,9,10,11] COMPUTE 1] [A INTERSECTION U} intersection {BUC} 2] C - B  3] B - C 4] { B - C }'
Asked by bangtan7hybe | 18 Sep, 2022, 06:36: PM
ANSWERED BY EXPERT
CBSE 11-science - Maths
find sum
Asked by sakshirana374 | 24 Jul, 2022, 05:39: PM
ANSWERED BY EXPERT
CBSE 11-science - Maths
write the range of the following function
Asked by jaishrisayam68 | 22 Jul, 2022, 05:30: PM
ANSWERED BY EXPERT
CBSE 11-science - Maths
for what value of a the point (a,1),(1,-3)and(1,4) are colinear
Asked by drvsam595 | 21 Jul, 2022, 05:32: PM
ANSWERED BY EXPERT
CBSE 11-science - Maths
the roots of -18i
Asked by simrangurdasani05 | 17 Jul, 2022, 03:39: AM
ANSWERED BY EXPERT
CBSE 11-science - Maths
there are 3 clubs A,B,C in atown with 40,50 and 60 members respectively .10 people are members of all three clubs 70are the members only in one club ,then find the number of members who have membership of exactly two clubs
Asked by ibcmw4 | 16 Jul, 2022, 08:14: PM
ANSWERED BY EXPERT
CBSE 11-science - Maths
Below is the question
Asked by itsanushkasoni | 29 Jun, 2022, 03:17: PM
ANSWERED BY EXPERT
CBSE 11-science - Maths
what's the formula of union of 4 sets
Asked by ahalyasahoo2511 | 27 Jun, 2022, 09:07: PM
ANSWERED BY EXPERT
CBSE 11-science - Maths
In connection with my previous doubt. Sir/Ma'am, but why are the signs of the inequalities reversed in the 2 inequations in the RD solution?
Asked by youdhustu | 25 Jun, 2022, 01:48: PM
ANSWERED BY EXPERT
CBSE 11-science - Maths
How to split this double inequality into 2 inequations and get the solution set of the system of inequations by intersection method? I didn't understand how to split it into 2 inequations.
Asked by youdhustu | 25 Jun, 2022, 12:10: PM
ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
×