

MCQOPTIONS
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1. |
The value of cot .tan(90 ) sec(90 ) cosec + (sin 25 + sin2 65 ) + 3 (tan 5 tan 15 . tan 30 . tan75 . tan 85 ) is : |
A. | 1 |
B. | - 1 |
C. | 2 |
D. | 0 |
Answer» B. - 1 | |