1.

The value of (tan29° cot61° – cosec261°) + cot254° – sec236° + (sin21° + sin23° + sin25° + ---------- + sin289°) is:

A. 21
B. 22
C. \(22\frac{1}{2}\)
D. \(20\frac{1}{2}\)
Answer» E.


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