what is the value of cos15 cos75
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ᴛʜᴇ ᴇxᴀᴄᴛ ᴠᴀʟᴜᴇ ᴏғ ᴄᴏs(45) ᴄᴏs ( 45 ) ɪs √22 2 2 .
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sorry we don't know that answer
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besause l am reading in six class
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