Math, asked by oyysnadeep, 1 year ago

cos38 cos52 - sin38 sin52=1

Answers

Answered by abhi569

5

cos38 cos52 - sin38 sin52

=> cos( 90 - 52 ) cos52 - sin38 sin 52

=> sin52 cos52 - sin38 sin52

=> sin52 ( cos52 - sin38 )

=> sin52 [ cos( 90 - 38 ) - sin38 ]

=> sin52 [ sin38 - sin38 ]

=> sin52 [ 0 ]

=> 0

kindly check your question.

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