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Q) Solve the following system of linear equations graphically: 2x- y – 2= 0 – 4 x + y + 4 = 0 Also, find the absolute difference between the ordinates of the points where given lines cut y – axis. PYQ: 28 – CBSE 2025 – Code 30 – Series 5 – Set 1 […]
Q) Find a relation between x and y such that the point P(x, y) is equidistant from the points A (3, 5) and B (7, 1). Hence, write the coordinates of the points on x-axis and y-axis which are equidistant from points A and B. PYQ: 29 – CBSE 2025 – Code 30 – Series
Q) Let 2A + B and A + 2B be acute angles such that sin (2A + B) = √3 / 2 and tan (A + 2B) = 1. Find the value of cot (4A – 7B). PYQ: 30 (b) – CBSE 2025 – Code 30 – Series 5 – Set 1 Ans: Let’s start solving
Q) Prove the following trigonometric identity: (1 + cosec A) / (cosec A) = (cos2 A) / (1 – sin A) PYQ: 30 (a) – CBSE 2025 – Code 30 – Series 5 – Set 1 Ans: Let’s start from LHS LHS = (1 + cosec A) / (cosec A) = (1 + (1 / sin
Q)Â Obtain the zeroes of the polynomial 7 x2Â + 18 x – 9 Hence, write a polynomial each of whose zeroes is twice the zeroes of given polynomial. PYQ: Q 27 – CBSE 2025 – Code 30 – Series 5 – Set 1 Ans:Â VIDEO SOLUTION STEP BY STEP SOLUTION Step 1: Given polynomial equation
Q)Â State true or false for each of the following statements and justify in each case: (i) 2 x 3 x 5 x 7 + 7 is a composite number. (ii) 2 x 3 x 5 x 7 + 1 is a composite number. PYQ: Q 26(b) – CBSE 2025 – Code 30 – Series 5
Q) While shuffling a pack of 52 cards, one card was accidently dropped. Find the probability that the dropped card (i) is not a face card. (ii) is a black king. PYQ: Q 25 – CBSE 2025 – Code 30 – Series 5 – Set 1 Ans: (ii) Probability to get a non – face
Q) AD and PS are medians of triangles ABC and PQR respectively such that Δ ABD ~ Δ PQS. Prove that Δ ABC ~ Δ PQR. PYQ: Q 24 – CBSE 2025 – Code 30 – Series 5 – Set 1 Ans: Step 1: Let’s first draw a diagram for the given question: [Note: prefer
Q) Â If sin A = y, then express cos A and tan A in terms of y. PYQ: Q 23(b) – CBSE 2025 – Code 30 – Series 5 – Set 1 Ans:Â Given that sin A = y. [Approach: Now, if we need to find cos A in terms of y and once
If sin A = y, then express cos A and tan A in terms of y. Read More »
Q) It is given that sin (A – B) = sin A cos B – cos A sin B. Use it to find the value of sin 15°. PYQ: Q 23(a) – CBSE 2025 – Code 30 – Series 5 – Set 1 Ans: Step 1: Here, we need to find value of sin 15°.