Ask a Doubt
Request a call back

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

CBSE Class 10 Answered

ySin²63°+ySin²27°/4cos²17°+4cos²73°=-½
Asked by yashpj0067 | 16 Jun, 2019, 02:09: PM
Expert Answer
fraction numerator y sin squared 63 plus y sin squared 27 over denominator 4 cos squared 17 plus 4 cos squared 73 end fraction equals negative 1 half fraction numerator begin display style y sin squared 63 plus y open parentheses sin left parenthesis 90 minus 63 right parenthesis close parentheses squared end style over denominator begin display style 4 cos squared 17 plus 4 left parenthesis cos left parenthesis 90 minus 17 right parenthesis right parenthesis squared end style end fraction equals negative fraction numerator begin display style 1 end style over denominator begin display style 2 end style end fraction fraction numerator begin display style y sin squared 63 plus y cos squared 63 end style over denominator begin display style 4 cos squared 17 plus 4 sin squared 17 end style end fraction equals negative fraction numerator begin display style 1 end style over denominator begin display style 2 end style end fraction fraction numerator begin display style y open parentheses sin squared 63 plus cos squared 63 close parentheses end style over denominator begin display style 4 open parentheses cos squared 17 plus sin squared 17 close parentheses end style end fraction equals negative fraction numerator begin display style 1 end style over denominator begin display style 2 end style end fraction y over 4 equals negative 1 half y equals negative 2
Answered by Renu Varma | 16 Jun, 2019, 07:32: PM

Application Videos

Concept Videos

Multiple Choice Questions Practice Test Subjective Questions Webinar Subjective Questions Pre Board Assessment
Answered Unanswered My Questions My Answers
CBSE 10 - Maths
tanA =cotB find A+B=?
Asked by ankitakulhar075 | 03 Apr, 2022, 08:43: PM
ANSWERED BY EXPERT
CBSE 10 - Maths
If cos(90 - A ) = 0 then sin( A + B ) =
Asked by arunpattu22 | 11 Jun, 2021, 11:21: AM
ANSWERED BY EXPERT
CBSE 10 - Maths
SHOW THAT cos 38°cos 52°- sin 38°sin 52° =0
Asked by debasreepartha | 23 Apr, 2021, 08:38: AM
ANSWERED BY EXPERT
CBSE 10 - Maths
if cos (40°-X)=30sin find the value of X
Asked by lavanyasureshkumar | 24 Aug, 2020, 04:02: PM
ANSWERED BY EXPERT
CBSE 10 - Maths
evaluate cot (90-theta) -tan theta
Asked by meenakshisrinivas4 | 20 Apr, 2020, 12:10: PM
ANSWERED BY EXPERT
CBSE 10 - Maths
Evaluate cos48°cos42°–sin48°sin42°
Asked by Maharanam446 | 22 Jan, 2020, 01:21: PM
ANSWERED BY EXPERT
CBSE 10 - Maths
Evaluate cot 12 cot 38 cot 52 cot 60 cot 78
Asked by sadhanapatil494 | 13 Jan, 2020, 08:02: PM
ANSWERED BY EXPERT
CBSE 10 - Maths
If A and B are acute in right angled ABC, then sin2 A + sin2 B =
Asked by preetisonips22 | 04 Jan, 2020, 05:44: PM
ANSWERED BY EXPERT
CBSE 10 - Maths
If tan 7theta=cot(5theta–30degree),both angles are acute angles,find the value of theta
Asked by shethdhrumil0 | 20 Dec, 2019, 12:09: AM
ANSWERED BY EXPERT
CBSE 10 - Maths
ySin²63°+ySin²27°/4cos²17°+4cos²73°=-½
Asked by yashpj0067 | 16 Jun, 2019, 02:09: PM
ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt