Find the value of other five trigonometric ratios:
When sinx=35, and x lies in second quadrant.
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Solution
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sinx=35 ⇒cscx=1sinx=53 ∵sin2x+cos2x=1 ⟹cos2x=1−sin2x=1−925⟹cos2x=1625 ⟹cosx=±45 Since x lies in second quadrant, the value of cosx will be negative ∴cosx=−45
∴secx=1cosx=−54
∴tanx=sinxcosx=(35)(−45)=−34
∴cotx=1tanx=−43
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