answer third question please
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multiplying
cosecsquaretheta+cosectheta-cosectheta-1=3
1+cotsquaretheta-1=3. (applying identity)
tansquaretheta=1/✓3
cosecsquaretheta+cosectheta-cosectheta-1=3
1+cotsquaretheta-1=3. (applying identity)
tansquaretheta=1/✓3
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