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sec (45+)-cot (45-)Evaluatecos(45+)cosec(45°-oy1cos30"+sin Go+c05609+sin 30° |
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Answer» sec^2(45+A)-cot^2{90-(45-A)/cos^2(45+A) osec^2{90-(45-A) +√3/2+√3/2/1 + 1/2+1/2=sec^2(45+A)-tan^2(45+A)/cos(45+A)sec(45+A). + √3+√3/2 /2+1+1/2=1/cos(45+A)×(1/cos(45+A) +2√3/2/4/2=1/1+√3/44+√3/4 |
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