PRT is a tangent to a circle with centre O, at the point R on it. Diameter SQ of the circle is produced to meet the tangent at P and QR is jointed. If ∠QRP = 28°, then the measure of ∠SPR is:

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SSC CGL Previous Paper 69 (Held On: 4 March 2020 Shift 2)
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  1. 62°
  2. 32°
  3. 29°
  4. 34°

Answer (Detailed Solution Below)

Option 4 : 34°
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Detailed Solution

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F2 S.G 15.4.20 Pallavi D4

∠QRP = 28°

As we know,

∠ORP = 90° [tangents at R]

⇒ ∠ORQ = ∠ORP – ∠QRP = 90° – 28° = 62°

⇒ ∠OQR = ∠ORQ = 62° [OQ = OR = radius]

As we know,

∠OQR = ∠ QRP + ∠QPR

⇒ 62 = 28 + ∠QPR

⇒ ∠QPR = 62 – 28 = 34

⇒ ∠SPR = ∠QPR = 34

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