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OSWAL PUBLICATION-INTRODUCTION TO TRIGONOMETRY AND TRIGONOMETRIC IDENTITIES -NCERT CORNER (Textbook Questions) (Exercise - 8.3)
- Evaluate : (sin 18^(@))/(cos 72^(@))
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- Evaluate : (tan 26^(@))/(cot 64^(@))
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- Evaluate : cos 48^(@) - sin 42^(@)
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- Evaluate : "cosec" 31^(@) - sec 59^(@)
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- Show that tan48^(@) tan 23^(@) tan 42^(@) tan 67^(@) =1.
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- Evaluate : cos 38^@ cos 52^@ - sin 38^@ sin 52^@.
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- If tan A=cot (A-18^(@)) where 2A is an acute angle , find the value of...
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- If tan A = cot B , prove that A + B = 90^(@) .
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- If sec 4A = cosec (A - 20^(@)), where 4A is an acute angle, find the v...
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- If A, B and C are interior angles of a triangle ABC, then show that si...
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- Express s in 67o+cos 75o in terms of trigonometric ratios of angles b...
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