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COS 39*SEC 51-TAN 51*COT39 |
Answer» Aɴsᴡᴇʀ :-ᴄᴏsᴇᴄ39 × sᴇᴄ51 - ᴛᴀɴ51 × ᴄᴏᴛ39= = > ᴄᴏsᴇᴄ (90-51) × sᴇᴄ51 - ᴛᴀɴ51 × ᴄᴏᴛ (90-39)= = > sᴇᴄ²51 -ᴛᴀɴ²51= = > 1Hᴏᴘᴇ ɪᴛ ʜᴇʟᴘs..! |
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