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Q)Β If sin(A + B) = 1 and cos (A β B) = β3/ 2 ,0Β° < A, B < 90Β°, find the measure of angles A and B. [Q 22 – Sample Question Paper – CBSE Board 2026] Ans:Β Let’s take each of the given values one by one: sin (A + B) = 1 Since […]
February 2026
Q) If AP and DQ are medians of triangles ABC and DEF respectively, where βABC~ βDEF, then prove that π΄π΅/π·πΈ = π΄π/π·π. [Q 23 – Sample Question Paper – CBSE Board 2026] Ans:Β Step 1: Given that,Β Ξ ABC ~ Ξ DEF, therefore β B = β EΒ Β …………. (i) and …………. (ii) Step 2:
Q) Find the area of the major segment (in terms of π)Β of a circle of radius 5 cm, formed by a chord subtending an angle of 90Λ at the centre. [Q 24 B – Sample Question Paper – CBSE Board 2026] Ans:Β Let the chord AB cut the circle in 2 parts. Sector APB