Tan thitha =3 ched 4 tar sec thitha chi kimmat kiti ?
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tan²o +1 = sec²o
9/16 +1 =sec²o
sec²o = 25/16
seco = +- 5/4
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9/16 +1 =sec²o
sec²o = 25/16
seco = +- 5/4
P.S SAVE PENGUINS
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