Teachingbd24...sin A . cos A I sin A . cos A sin A cos A sin A cosecA . secA + I = secA.cosecA + I...
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Teachingbd24...sin A . cos A I sin A . cos A sin A cos A sin A cosecA . secA + I = secA.cosecA + I cos A 4 (Ans.) 16xy — 16xy —V) sec tan cos 9 — cot cote = — tan9. tan9 cose