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We know that tan (A + B) = (tan A + tan B)/(1 - tan A tan B) (tan 40 º + tan 20 º )/(1 - tan 40 º tan 20 º) = tan ( 40 º + 20 º) = √3
l). 3p + 2q = 27
ll). 4p - 3q = 2
I. 2x2- 15x + 25 = 0
II. 3y2- 10y + 8 = 0
I. 6x2- 41x+13=0
II. 2y2- 19y+42=0
I: x² - 10x + 21 = 0
II: 4y² - 16y + 15 = 0
I. 35 y² + 58 y + 24 = 0
II. 21 x² + 37 x + 12 = 0
I. 2x2 + 3x - 9 = 0
II. 3y2 - y - 10 = 0
Quantity I: A vessel contains a mixture of milk and water in the ratio of 7 : 5. If 9 litre of mixture is sold and replaced by same amount of water then...
I. x2 – 36 = 0
II. y2 - 7y + 6 = 0
If the roots of the quadratic equation 5x² + 4x + 6 = 0 are α and β, then what is the value of [(1/α) + (1/β)]?
...How many values of x and y satisfy the equation 2x + 4y = 8 & 3x + 6y = 10.
