(sin 80+cos 10)(sin 80-cos 10)=ldots ldots ldots

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8. Introduction to Trigonometry

easy

$(\sin 80+\cos 10)(\sin 80-\cos 10)=\ldots \ldots \ldots$

A

$1$

B

$2$

C

$0$

D

$\cos ^{2} 10$

Solution

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Standard 10

Mathematics

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