Mathematics
Assertion (A) : If ∠A + ∠B = 90°, h = cm Reason (R) : tan A = h/16 and tan B = h/9 . Also, A = 90° - B ⇒ tan A = cot B ⇒ tan A × tan B = 1 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) : Multiplicative inverse of (sec θ - tan θ) is (sec θ + tan θ).
Reason (R) : sec2 θ - tan2 θ = 1.
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 mean age of nine boys is 28 years. If one new boy joins them, new mean age becomes 29 years. The age of new boy is (29 - 28) × 10 years.
Reason (R) : The age of new boy is 29 × 10 - 28 × 9 years.
A is true, R is false.
A is false, R is true.
Both A and R are true.
Both A and R are false.