1. Δ DEF is right angled at E. If m∠D = 45°, then what is the value of cosecF X cotD?





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  • By: anil on 05 May 2019 01.45 am
    E = 90° D = 45° then F = 45° ($$ecause D+E+F = 180$$°) cosecF X cotD = cosec45 * cot45 = √2 * 1 =  √2 So the answer is option D.
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