Mathematics
Assertion (A): If 5 sin A = 4 cos A, the value of tan A = 4/5 . Reason (R): 5 sin A = 4 cos A ⇒ sinA/cosA = 4/5 ⇒ tan A = 4/5 1. A is true, R is false. 2. A is false, R is true. 3. Both A and R are true. 4. Both A and R are false.
Related Questions
Assertion (A): The ratio between the edges of three cubes is 2 : 3 : 4. The ratio between their volumes is 4 : 9 : 16.
Reason (R): The ratio between their volumes = 23 : 33 : 43 = 8 : 27 : 64.
- 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 internal area of cross-section of a pipe is 21 cm2. Water runs through this pipe at a speed of 5 km/h. The volume of water that runs through the pipe in 2 minutes = 21 cm2 x 5 km/h x 2 minutes
Reason (R): The volume of water that runs through the pipe in 2 minutes = area of cross-section in cm2 x speed of water through it in cm/s x time in seconds
- A is true, R is false.
- A is false, R is true.
- Both A and R are true.
- Both A and R are false.