prove that sec^2theta-tan^2theta=1
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ʜʏ ᴅᴇᴀʀ ʟᴇᴛ's sᴇᴇ ᴛʜᴇ ᴀᴛᴛᴀᴄʜᴍᴇɴᴛ ᴀɴᴅ ғɪɴᴅ ᴜʀ ᴀɴsᴡᴇʀ☺️
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naman2308:
really should i delete it......
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