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Archy [21]
2 years ago
10

Find the value of X

Mathematics
1 answer:
devlian [24]2 years ago
8 0

Answer:

x = 14

Step-by-step explanation:

  • By tangent secant theorem

  • x^2 = 7(7+21)

  • \implies x^2 = 7(28)

  • \implies x ^2=196

  • \implies x=\pm\sqrt{196}

  • \implies x=\pm 14

  • x can not be negative

  • \implies x=14
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