If tan a =2, find the value of sec a
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Answer:
tan∅ = 5/12
squaring both sides
tan²∅ = 25/144
we know
sec²∅ = 1+tan²∅ ( put tan∅ 's value)
sec²∅ = 1 + 25/144
sec²∅ = 169/144
square root both sides
sec∅ = 13/12
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