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If θ = 135°, between which two standard angles does θ lie?

Answer and explanation

Correct answer: 90° and 180°

The governing idea is the division of one full revolution into four quadrants using the standard boundary angles 0°, 90°, 180°, 270°, and 360°. Compare 135° with the consecutive boundaries around it: 90° < 135° < 180°. Therefore θ lies between 90° and 180° and is located in the second quadrant, so option B is correct. It cannot be in the first quadrant because that interval ends at 90°. It cannot be in the third quadrant because that begins at 180°, and it cannot be in the fourth quadrant because that begins at 270°. The simple inequality is sufficient; no trigonometric calculation is required.

Related tags

Trigonometric-FunctionsAnglesQuadrantsTrigonometric FunctionsMathematicsClass 12 Mcq

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