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CBSE Class 11-science Answered

Pls solve
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Asked by sdmbotch1123 | 18 Jan, 2023, 11:01: PM
answered-by-expert Expert Answer
5 cosA + 3 = 0
 
cosA = -3/5  ;  hence sinA = begin mathsize 14px style square root of 1 minus open parentheses 3 over 5 close parentheses squared end root space equals space 4 over 5 end style
 
Roots of quatratic equation :- 9x2 + 27x + 20 = 0
 
begin mathsize 14px style x space equals space fraction numerator negative 27 plus-or-minus square root of left parenthesis 27 right parenthesis squared minus left parenthesis 4 cross times 9 cross times 20 right parenthesis end root over denominator 18 end fraction space equals space minus 4 over 3 space space o r space minus 5 over 3 end style
x = tanA or secA
Answered by Thiyagarajan K | 19 Jan, 2023, 07:49: AM

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CBSE 11-science - Maths
For a real number r, the quadratics x² + (r - 1) x + 6 and x² + (2r + 1) x + 22 have a common real root. The sum of the possible values of r can be expressed as a/ b where a, b are relatively prime positive integers. Compute 10a + b
Asked by Bhaveshkr211 | 30 Jul, 2023, 05:21: PM
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CBSE 11-science - Maths
Pls solve
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Asked by sdmbotch1123 | 18 Jan, 2023, 11:01: PM
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CBSE 11-science - Maths
complete solution set of the equation |x^2-3|+|2-x|=|x^2-x-1|
Asked by rajshekhara348 | 20 Jun, 2022, 11:23: PM
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CBSE 11-science - Maths
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CBSE 11-science - Maths
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Asked by sohailsidmd002 | 11 Oct, 2020, 02:35: PM
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CBSE 11-science - Maths
find the value of p and q if the equation px²+5x+2=0 and 3x²+10x+q=0 have both roots in common.
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Asked by ssroul.tcbls | 02 Jul, 2020, 07:15: PM
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CBSE 11-science - Maths
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Asked by avinashjha3012 | 22 Jun, 2020, 05:41: PM
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CBSE 11-science - Maths
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Asked by drhimasingh | 26 May, 2020, 11:31: PM
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write the quadratic equation, the arithmetic mean, Geometric mean of whose roots are A and G respectively
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