CBSE Class 10 Answered
trigonometry.
Asked by khushal305 | 16 Feb, 2010, 02:03: PM
Expert Answer
tan2 θ + secθ = 5
i.e sec2 θ -1 + secθ = 5
i.e sec2 θ + secθ -6 = 0
i.e sec2 θ + 3secθ - 2 secθ - 6 = 0
i.e secθ (secθ +3) -2(secθ +3)=0
i.e (secθ-2)(secθ+3) = 0
So, secθ = 2 or -3
Answered by | 16 Feb, 2010, 02:31: PM
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