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If sin θ = -1/2 for 0 < θ < 360o, the value of θ is
Question 1
Report
If sin θ = -
1
/
2
for 0 < θ < 360
o
, the value of θ is
30
o
and 150
o
150
o
and 210
o
210
o
and 330
o
150
o
and 330
o
Answer Details
Solution
sin θ = -
1
/
2
= -0.5
θ = sin
-1
(0.5)
θ = 30
o
Since θ is negative
θ = 180 + 30 = 210
o
θ = 360 - 30 = 330
o
∴θ = 210
o
and 330
o
Read lesson note on Sine, Cosine And Tangent Of An Angle (WAEC)
Sine, Cosine And Tangent Of An Angle
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