solve for ø; cos²ø - sinø =1/4 (-360<ø<360)
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Answer:
cosec θ+2=0
⇒sinθ=−
2
1
⇒θ=(π+
6
π
), (2π−
6
π
)
⇒θ=
6
7π
,
6
11π
⇒θ=210
°
,330
°
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