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Find the length of the tangent if d = 5 cm and r = 4 cm.(a) 3 cm(b) 4 cm(c) 5 cm(d) 9 cmThe question was asked in a national level competition.This intriguing question comes from Tangent to a Circle in division Circles of Mathematics – Class 10 |
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Answer» RIGHT option is (a) 3 cm For EXPLANATION I WOULD say: The length of the tangent = \(\sqrt {d^2-r^2}\) = \(\sqrt {5^2-4^2}\) = √9 = 3 |
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