Question

3 State the quadrant in which O lies if
i) tano <
tano < 0 and seco >0
ii) sino < 0 and coso <0
iii) sino > 0 and tano <0​

Answer 1

i) tanθ < 0 and secθ >0 = 4th ( cosine is positive in 4th quadrant)

ii) sinθ < 0 and cosθ <0 = 3rd ( only tan is positive in 3rd quadrant)

iii) sinθ > 0 and tanθ <0 = 2nd ( sine is positive in 2nd quadrant)

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