prove that tano
Seco-1
Seco + L
tano
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Answer:
Step-by-step explanation:
tanO+secO-1/tanO-secO+1
=(secO+tanO)-(sec²O-tan²O)/(tanO-secO+1)
=(secO+tanO)(1-secO+tanO)/(tanO-secO+1)
=secO+tanO
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