Find the value of following expression $$\log\sin 40^\circ \log \sin 41^\circ --- \log \sin 99^\circ \log \sin 100^\circ$$
= $$\log\sin 40^\circ \log \sin 41^\circ..... \log \sin 90^\circ...... \log \sin 99^\circ \log \sin 100^\circ$$
= $$\log \sin 90^\circ$$
= log 1
= 0
Answer is option B.
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