Question 25
∆DEF is right angled at E. If $$cosec D = \frac{25}{24}$$, then what is the value of $$cos F$$ ?
Solution
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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