Question 95

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

Solution

E = 90° D = 45°

then F = 45° ($$\because D+E+F = 180$$°)

cosecF X cotD = cosec45 * cot45 = √2 * 1 = √2

So the answer is option D.

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