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cot square60+sin square 45+sin square 30+cos square 90 Find the value
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ʜᴇʀᴇ's ʏᴏᴜʀ ᴀɴsᴡᴇʀ
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ᴄᴏᴛ^2 60° + sɪɴ^2 45° + sɪɴ^2 30° + ᴄᴏs^2 90°
= ( 1 / √3 )^2 + ( 1 / √2 )^2 + ( 1 / 2 )^2 + ( 0 )^2
= 1 / 3 + 1 / 2 + 1 / 4 + 0
= 4 + 6 + 3 / 12
= 13 / 12
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