1. ∆DEF is right angled at E. If $$cosec D = \frac{25}{24}$$, then what is the value of $$cos F$$ ?
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By: anil on 05 May 2019 03.00 pm
Given : $$cosec D$$ = $$frac{25}{24}$$ Also, $$cosec D=frac{DF}{EF}=frac{25}{24}$$ Let DF = 25 cm and EF = 24 cm To find : $$cos F=frac{EF}{DF}$$
= $$frac{24}{25}$$ => Ans - (C)
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= $$frac{24}{25}$$ => Ans - (C)