Mathematics
In the given figure, ∠ABC = 66°, ∠DAC = 38°. CE is perpendicular to AB and AD is perpendicular to BC. Prove that: CP > AP.

Triangles
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Answer
In △ABD,
By angle sum property of triangle,
⇒ ∠ABD + ∠ADB + ∠BAD = 180°
⇒ 66° + 90° + ∠BAD = 180°
⇒ ∠BAD + 156° = 180°
⇒ ∠BAD = 180° - 156°
⇒ ∠BAD = 24°
In △AEP,
By angle sum property of triangle,
⇒ ∠AEP + ∠APE + ∠BAD = 180°
⇒ 90° + ∠APE + 24° = 180°
⇒ ∠APE + 114° = 180°
⇒ ∠APE = 180° - 114°
⇒ ∠APE = 66°
From figure,
∠APE + ∠APC = 180° (Linear pair)
⇒ 66° + ∠APC = 180°
⇒ ∠APC = 180° - 66°
⇒ ∠APC = 114°
In △APC,
By angle sum property of triangle,
⇒ ∠APC + ∠ACP + ∠PAC = 180°
⇒ 114° + ∠ACP + 38° = 180°
⇒ ∠ACP + 152° = 180°
⇒ ∠ACP = 180° - 152°
⇒ ∠ACP = 28°
We know that,
The shortest side of a triangle has the shortest angle opposite to it.
⇒ AP < CP
⇒ CP > AP.
Hence, proved that CP > AP.
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