## Quadratic Equation Class 10 Mathematics – Videos

Meaning of Quadratic Equation : https://youtu.be/i7ia5ibODJM Solution of Quadratic Equation by Factorization Method : Example 1 : https://youtu.be/mYN5gKOnH6Q Example 2 : https://youtu.be/252fdXY-sOc Example 3 : https://youtu.be/L3a3NF81WAg Sridhar Acharya Formula : https://youtu.be/cpP1WiGvhTo Nature of Two Roots of the Quadratic Equation : Example 1 : https://youtu.be/G_kHonwTOos Example 2 : https://youtu.be/7snf5vPkdHE Example 3 Read more…

## H.C.F and L.C.M of Algebraic Expression Class 8 Mathematics

G.C.D = Greatest Common Divisior H.C.F = Higest Common Factor L.C.M = Least Common Multiple Level – 01 1 ) Find G.C.D of 4a2 b2 , 20ab2 . Solution : First term = 4a2 b2 = 2 * 2 * a * a * b * b Second term = Read more…

## Find the values of (0° ≤ θ ≤ 90° ) for which 2 sinθ cosθ = cosθ. ( WBBSE – 2019 )

Find the values of (0° ≤ θ ≤ 90° ) for which 2 sinθ cosθ = cosθ. Solution : 2 sinθ cosθ = cosθ ⇒ 2 sinθ cosθ – cosθ = 0 ⇒ cosθ ( 2 sinθ – 1 ) = 0 Either cosθ = 0 ⇒ cosθ = cos90° Read more…

## If sin 10θ = cos8θ and 10θ is a positive acute angle, then find the value of tan9θ. ( WBBSE – 2019 )

If sin 10θ = cos8θ and 10θ is a positive acute angle, then find the value of tan9θ. Solution : sin 10θ = cos8θ [ ∵ sin ( 90 – θ ) = cos = θ ] ⇒ sin 10θ = sin ( 90 – 8θ ) ⇒ 10θ = Read more…