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Prove that: ltmath gt ltmrow gt ltmi gts lt/mi gt ltmi gti lt/mi gt ltmi gtn lt/mi gt ltmsu

45 views · Published 22 June 2018 · 1:26 · Indexed 20 September 2026

Channel: Doubtnut · 2018 · Education

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This is the Solution of Question From RD SHARMA book of CLASS 11 CHAPTER TRIGONOMETRIC RATIOS AND IDENTITIES This Question is also available in R S AGGARWAL book of CLASS 11 You can Find Solution of All Question From RD SHARMA and R S AGGARWAL book from class 6-12 on our app DOUBTNUT for Free



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==== QUESTION TEXT ====

Prove that: `s in 80^0-cos 70^0=cos 50^0`

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