Andhra & Telangana Board - Class 9

Secondary Mathematics question bank (Mathematics (NTSE Foundation))

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Q1.

త్రికోణమితి (Trigonometry - SSC Board Standard): 'Real Numbers (Irrational Numbers, Surds)' త్రికోణమితి సర్వసమీకరణం ఏది?

(A)

$\sin^2 \theta + \cos^2 \theta = 1$, $\sec^2 \theta - \tan^2 \theta = 1$ ($Real Numbers (Irrational Numbers, Surds)$)

(B)

$\sin^2 \theta - \cos^2 \theta = 1$

(C)

$\tan \theta = \frac{{\cos \theta}}{{\sin \theta}}$

(D)

None of the above

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Q2.

నిరూపక జ్యామితి మరియు సాంఖ్యకశాస్త్రం (Coordinate Geometry & Statistics): 'Real Numbers (Irrational Numbers, Surds)' బిందువుల మధ్య దూరం లేదా మధ్యగతం సూత్రం ఏది?

(A)

$d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}$, Median = $l + \left[\frac{\frac{n}{2} - cf}{f}\right] h$ ($Real Numbers (Irrational Numbers, Surds)$)

(B)

$d = (x_2 - x_1) + (y_2 - y_1)$

(C)

Mode is always equal to Median

(D)

None of the above

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