UP TGT Mathematics Trigonometry Test Series - Part 3
The value of cot(pi / 12) * cot(5 * pi / 12) is equal to:
Type: MCQ • Marks: 1
The value of cot(pi / 12) * cot(5 * pi / 12) is equal to:
Options
A. -1
B. 1
C. 3
D. sqrt(3)
Explanation
(1). Circular measurement uses radian relation s = r*theta. Special angles (15°, 18°, 36°, 22.5°) are evaluated using half-angle and compound angle expansions.
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