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Ex 8.3, 2 (ii) - Chapter 8 Class 10 Introduction to Trignometry (Term 1)
Last updated at Aug. 11, 2021 by Teachoo
Chapter 8 Class 10 Introduction to Trignometry
Serial order wise
Transcript
Ex 8.3, 2 Show that : (ii) cos 38 cos 52 sin 38 sin 52 = 0 Taking L.H.S cos 38 cos 52 sin 38 sin 52 = cos (90 52) cos (90 38) sin 38 sin 52 = sin 52 sin 38 sin 38 sin 52 = 0 = R.H.S L.H.S = R.H.S Hence proved
