Question

ajutatima clik pe poza va multumesc

Answer 1

$d = R_{1} - R _{2} = 10 - 5 = 5$

a) $t_{1} = \sqrt{ d^{2} + 15^{2} } = \sqrt{25+225} = \sqrt{250}= 15.811$

b) $t_{2} = \sqrt{ d^{2} + 13^{2}}= \sqrt{ 25 + 169 }= \sqrt{194}= 13.928$

c)$t_{3} = \sqrt {d^{2} + 20^{2}} = \sqrt{25+400} = \sqrt{425} = 20.615$