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The value of ⎟ ⎟ ⎟ ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎜ ⎜ ⎜ ⎝ ⎛ ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ π − ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ π − 4 sin 1 4 15 cos tan 1 is equal to-

1. 4 π −
2. 8 π −
3. 12 5 π −
4. 9 4 π −

Correct answer: 8 π −

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