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Q) Solve the following pair of linear equations: 152x – 378y = – 74 – 378 x + 152y = – 604 Ans: Given the equations: Solve the following pair of linear equations: 152 x – 378 y = – 74 ….. (i) – 378 x + 152 y = – 604 ….. (ii) We […]
Solve the following pair of linear equations: 152x – 378y = -74, -378 x + 152y = -604 Read More »
Q) Solve the following pair of linear equations: ax + by = c bx + ay = 1 + c Ans: Given the equations: a x + b y = c ….. (i) b x + a y = 1 + c ….. (ii) Let’s multiply equation (i) with a and equation (ii) with b and we get:
Solve the following pair of linear equations: ax + by = c, bx + ay = 1 + c Read More »
Q) Solve the following pair of linear equations: px + qy = p – q qx – py = p + q Ans: Given the equations: Solve the following pair of linear equations: px + qy = p – q …………. (i) qx – py = p + q ………….. (ii) Let’s multiply equation (i)
Solve the following pair of linear equations: px + qy = p – q, qx – py = p + q Read More »
Q) A straight highway leads to the foot of a tower. A man standing at the top of the tower observes a car at an angle of depression of 30∘, which is approaching to the foot of the tower with a uniform speed. Six seconds later, the angle of depression of the car is found to
A straight highway leads to the foot of a tower. A man standing Read More »
Q) Ans: Here, – – – Please do press “Heart” button if you liked the solution.
Q) Find the sum of 𝑛 terms of the series (4 −1/𝑛) + (4 −2/𝑛) + (4 −3/𝑛) +….. Ans: Method 1: The AP (4 −1/𝑛) + (4 −2/𝑛) + (4 −3/𝑛) +….. can be re-arranged as: (4 + 4 + 4 + 4 + ….. up to 𝑛 terms ) – (1 + 2
Find the sum of 𝑛 terms of the series (4 −1/𝑛) + (4 −2/𝑛) + (4 −3/𝑛) +….. Read More »
Q) If , then find the value of , where α is in IV quadrant. Ans: Since, We know that Now since, α is in IV quadrant, therefore value of will be negative only. Now, Therefore Please do press “Heart” button if you liked the solution.
Q) If cot θ = then evaluate that Ans: Please do press “Heart” button if you liked the solution.
If cotθ = 15/8, then evaluate (2 + 2 sinθ)(1 – sinθ)/(1 + cosθ)(2 – 2 cosθ) Read More »
Q) IF sec θ=(x + 1/4x) then prove that sec θ + tan θ = 2x or 1/2x Ans: Given When When Therefore, value of Please do press “Heart” button if you liked the solution.
IF Sec θ=(x+1/4x) then prove that secθ +tanθ =2x or 1/2x Read More »
Q) Solve the following quadratic equations by factorization method: Ans: Please do press “Heart” button if you liked the solution.
Solve the following quadratic equation by factorization method: 4(√3)x2 + 5x – 2√3 = 0 Read More »