Sudarshan Asked a Question
April 9, 2020 12:29 pmpts 30 pts
What should be the value of a such that the straight line x+y=awill be a tangent to the circle x+y = 42 ( 1 (B) 2 (C) 2/2 (D) 4
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  • Vaishnavi rajora
    c ans is correct .
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  • Vaishnavi rajora
    option c .
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  • Ruby negi Best Answer
    solution.
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  • Abhishek singh thankyou
    solution attached
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  • Ujjawal vishal thankyou
    substitute y = a-x in equation of circle.... it will become quadratic in x and if line touches circle (tangent)/then quadratic equation should have only one root..for this equate d...
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