1.

The value of cotθ. tan(90° - θ) - sec (90° -θ) cosec θ + (sin² 25° + sin² 65°) +√3(tan 5°. tan 15°. tan 30°. tan 75°. tan 85°) is :

A. 0
B. 1
C. -1
D. 2
Answer» C. -1


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