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Q:

ΔPQR, Q पर एक समकोण है। यदि cos P = 3/5 है, तो cos R का मान ज्ञात करें?

  • 1
    $$ {3\over4}$$
  • 2
    $$ {5\over3}$$
  • 3
    $$ {4\over5}$$
  • 4
    $$ {4\over3}$$
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Answer : 3. "$$ {4\over5}$$"

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