Ask a Doubt
Request a call back

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

ICSE Class 10 Answered

If a and b are acute angles such that tan a =1/2,tan b=1/3 and tan(a+b)=tan a +tan b/1-tana*tanb then find tan(a+b)
Asked by kmondaldgms | 17 Aug, 2018, 00:03: AM
answered-by-expert Expert Answer
begin mathsize 16px style We space have space tan left parenthesis straight a space plus space straight b right parenthesis space equals space fraction numerator tana space plus space tanb over denominator 1 space minus space tana cross times tanb end fraction rightwards double arrow tan left parenthesis straight a space plus space straight b right parenthesis space equals space fraction numerator begin display style 1 half end style space plus begin display style 1 third end style space over denominator 1 space minus space begin display style 1 half end style cross times begin display style 1 third end style end fraction space equals space fraction numerator begin display style 5 over 6 end style over denominator begin display style 5 over 6 end style end fraction space equals space 1 rightwards double arrow tan left parenthesis straight a space plus space straight b right parenthesis space equals space 1 rightwards double arrow tan left parenthesis straight a space plus space straight b right parenthesis space equals space tan space 45 degree space space space...... since space space tan space 45 degree space equals space 1 rightwards double arrow straight a space plus space straight b space equals space 45 degree end style
Answered by Yasmeen Khan | 17 Aug, 2018, 10:50: AM

Application Videos

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
ICSE 10 - Maths
find AP whose 6 th term = 5 and 10 th term=9
Asked by ag1106511 | 17 Jul, 2024, 00:41: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 10 - Maths
sum of 10 tems of ap is 35 and sum of 9 terms of ap is 28. find the 10th term of an ap.
Asked by astonfern123 | 14 Jul, 2024, 20:01: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 10 - Maths
the speed of an aeroplane by 40 km per hour it takes Minutes more to cover 1200km find speed of the aeroplane
Asked by anjumnahida176 | 23 Jun, 2024, 15:29: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 10 - Maths
hhg
question image
Asked by rajibjena122 | 19 Jun, 2024, 20:28: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 10 - Maths
9 years ago grandfathers age was 9 times the grandsons age at that time after 15 years age will be ET rice as the grandsons age find their present age
Asked by rupalipatange0 | 13 Jun, 2024, 20:36: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 10 - Maths
let c be the path leading from the origin to the point (1,1,1) show that integral over c [2xydx+(x²+2yz)dy+(y²+1)dz]=3
Asked by tanushreetanu46t | 12 Jun, 2024, 22:59: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 10 - Maths
show that integral over c [y²dx+2xy dy] is independent of the path joining 0,1 and 1,3 and hence evaluate
Asked by varucreations16 | 12 Jun, 2024, 22:45: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 10 - Maths
evaluate integral over c (2x+y)ds where c is the circle x²+y²=25 on the xy plane from the points 3,4 to 4,3
Asked by varucreations16 | 09 Jun, 2024, 15:02: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 10 - Maths
If two coins are tossed, what is the probability of getting(1) 2 heads (2) no heads (3) at least 1 head
Asked by rakesh_shukla2006 | 06 Jun, 2024, 12:55: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 10 - Maths
(a²+c²),(ab+cd) and (b²+d²) and in continued proportion, prove that a,b,c,d are in the proportuon
Asked by raghutangi04 | 30 May, 2024, 19:20: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Are You a Teacher or a Parent Seeking Customised Tests? Click here
×