Mathematics
Assertion (A): tan 30° + sec 30° = cot 30°. Reason (R): sec θ = 1. Assertion (A) is true, Reason (R) is false. 2. Assertion (A) is false, Reason (R) is true. 3. Both Assertion (A) and Reason (R) are true, and Reason (R) is the correct reason for Assertion (A). 4. Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct reason (or explanation) for Assertion (A).
Related Questions
In the adjoining figure, PQR is a right triangle right angled at Q. If PQ = 4 cm and PR = 8 cm then ∠P is equal to
60°
45°
30°
15°
Consider the following two statements.
Statement 1: sin 18° - cos 72° = 0.
Statement 2: sin θ = cos (90° - θ).
Which of the following is valid?
Both the statements are true.
Both the statements are false.
Statement 1 is true, and Statement 2 is false.
Statement 1 is false, and Statement 2 is true.
Assertion (A): If ΔABC is equilateral, then cos A + cos B + cos C = sin A + sin B + sin C.
Reason (R): In isosceles right angled triangle ABC, cos A + cos C = sin A + sin C.
Assertion (A) is true, Reason (R) is false.
Assertion (A) is false, Reason (R) is true.
Both Assertion (A) and Reason (R) are true, and Reason (R) is the correct reason for Assertion (A).
Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct reason (or explanation) for Assertion (A).