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Mathematics 7 Online
OpenStudy (anonymous):

find exact value using sum/difference identities cos 105 a. (√2 - √6)/4 b. (√6 - √3)/4 c. (√6 - √2)/4 d. (√3 - √6)/4 sin 165 a. (√2 - √6)/4 b. (√3 - √6)/4 c. (√6 - √2)/4 d. (√6 - √3)/4

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