Mathematics
Assertion (A) : Given two straight lines 3x - 2y = 5 and 2x + ky + 7 = 0 are perpendicular to each other when k = 3.
Reason (R) : Let AB and CD be two mutually perpendicular lines and their inclinations be α and θ respectively, then tan θ = -cot α.
A is true, R is false.
A is false, R is true.
Both A and R are true.
Both A and R are false.
Related Questions
Assertion (A) : In the figure given below the measurement of x = 12 cm.
Reason (R) : In similar triangles, the corresponding sides are in proportion.
A is true, R is false.
A is false, R is true.
Both A and R are true.
Both A and R are false.
Assertion (A) : The perpendicular drawn from the vertex of the right angle of a right-angled triangle divides the triangle into two triangles similar to each other.
Reason (R) : Triangles, which are similar to the same triangle, are similar to each other.
A is true, R is false.
A is false, R is true.
Both A and R are true.
Both A and R are false.