Question

1. If sin A = 1/2, then the value of cot A is :
(A) √3 (B) 1/√3. (C)√3/2. (D) 1

2. Given that sin o=- and cosß=, then the value
of (a + b) is :
(A) 0° (B) 30° (C) 60° (D) 90°​

Answer 1

Answer:

sin A=1/2 =perpendicular/hypotenuse

perpendicular =1;hypotenuse =2

applying pythagoras theorem

base =/3

hence

cot A =base/perpendicular

so the answer is (A)