1. Chapter 8 Class 10 Introduction to Trignometry (Term 1)
  2. Serial order wise
  3. Ex 8.3

Ex 8.3, 2 (i) - Chapter 8 Class 10 Introduction to Trignometry (Term 1)

Last updated at Aug. 11, 2021 by

Ex 8.3, 2 - Show that (i) tan 48 tan 23 tan 42 tan 67 = 1 - Trignometric ratios of complementry angles

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  1. Chapter 8 Class 10 Introduction to Trignometry (Term 1)
  2. Serial order wise

    3. Ex 8.3

    Ex 8.4 →

Transcript

Ex 8.3, 2 Show that : tan 48 tan 23 tan 42 tan 67 = 1 Taking L.H.S tan 48 tan 42 tan 23 tan 67 = tan 48 tan(90 48 ) tan 23 tan(90 23 ) = tan 48 cot 48 tan 23 cot 23 = (tan 48 1/tan 48 ) (tan 23 1/tan 23 ) = 1 1 = 1 = R.H.S L.H.S = R.H.S Hence proved

Chapter 8 Class 10 Introduction to Trignometry (Term 1)
Serial order wise

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