Ask a Doubt
Request a call back

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

CBSE Class 11-science Answered

Which of the following is the correct option?
question image
Asked by dineshchem108 | 03 Sep, 2018, 09:03: AM
answered-by-expert Expert Answer
begin mathsize 16px style tan open parentheses straight alpha minus straight beta close parentheses equals fraction numerator sin 2 straight beta over denominator 3 minus cos 2 straight beta end fraction tan open parentheses straight alpha minus straight beta close parentheses equals fraction numerator 2 sinβcosβ over denominator 2 minus 2 cos 2 straight beta plus 1 plus cos 2 straight beta end fraction tan open parentheses straight alpha minus straight beta close parentheses equals fraction numerator begin display style 2 sinβcosβ end style over denominator begin display style 2 open parentheses 1 minus cos 2 straight beta close parentheses plus open parentheses 1 plus cos 2 straight beta close parentheses end style end fraction tan open parentheses straight alpha minus straight beta close parentheses equals fraction numerator begin display style 2 sinβcosβ end style over denominator begin display style 2 cross times 2 sin squared straight beta plus 2 cos squared straight beta end style end fraction tan open parentheses straight alpha minus straight beta close parentheses equals fraction numerator begin display style 2 sinβcosβ end style over denominator begin display style 4 sin squared straight beta plus 2 cos squared straight beta end style end fraction cross times fraction numerator begin display style fraction numerator 1 over denominator begin display style cos squared end style begin display style straight beta end style end fraction end style over denominator fraction numerator 1 over denominator begin display style cos squared straight beta end style end fraction end fraction tan open parentheses straight alpha minus straight beta close parentheses equals fraction numerator begin display style 2 end style tan begin display style straight beta end style over denominator begin display style 4 end style begin display style tan squared end style begin display style straight beta end style begin display style plus end style begin display style 2 end style end fraction tan open parentheses straight alpha minus straight beta close parentheses equals fraction numerator begin display style tan straight beta end style over denominator begin display style 2 tan squared straight beta plus 1 end style end fraction fraction numerator begin display style tanα minus tanβ end style over denominator 1 plus tanαtanβ end fraction equals fraction numerator begin display style tanβ end style over denominator begin display style 2 tan squared straight beta plus 1 end style end fraction Solving space further space we space get space correct space option space as space left parenthesis straight a right parenthesis. end style
Answered by Sneha shidid | 03 Sep, 2018, 11:16: AM

Concept Videos

Multiple Choice Questions Practice Test Subjective Questions Webinar Subjective Questions Pre Board Assessment
Answered Unanswered My Questions My Answers
CBSE 11-science - Maths
Please someone solve No. 15.iii)
question image
Asked by jiujam | 06 Jul, 2019, 03:34: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
The equation sinx(sinx+cosx)=k has real solutions if and only if k is a real number such that_____________?  
Asked by aahnik.mohanty | 22 May, 2019, 10:09: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
If f(x)=2(7cosx+24sinx)(7sinx-24cosx), then find the maximum value of (f(x))^1/4
Asked by aahnik.mohanty | 22 May, 2019, 09:59: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
Cot 4x (sin5x + sin3x)= cot x (sin5x - sin3x)
Asked by Iamanish2003 | 20 May, 2019, 02:12: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
In ∆ABC, If r1=8, r2=12, r3=24,Show that a=12,b=16,c=20. (From 
Asked by Soma | 04 Mar, 2019, 11:18: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
Which of the following is the correct option?
question image
Asked by dineshchem108 | 03 Sep, 2018, 09:03: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
If acos θ = bcos (θ+120°) = c cos (θ+240°) , then find the value of 1/a+1/b+1/c
Asked by tps.mjmdr | 16 Jun, 2018, 05:45: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
If 13θ= π , find the value of 3θ+cos5θ + 2cosθcos9θ
Asked by tps.mjmdr | 16 Jun, 2018, 05:40: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
Prove that,
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
If  find the value of
Asked by Topperlearning User | 31 Aug, 2016, 06:47: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt

Be a Top Scorer in the Exam with Test Series and Test Generator!

Enrol Now
×