Question

4 State
State whether the following are true or false, Justify your answer.
(1) sin(A + B) = sin A +sin B.
(1) The value of sin 0 increases as 0 increases
(iii) The value of cos 0 increases as o increases.
(iv) sin 0 = cos e for all values of 0.
(v) cot A is not defined for A=0°​

Answer 1

1. False
2. True
3. False
4.False
5.True

Answer 2

Step-by-step explanation:

(i) False, sin(A+B) means sin of Sum of angles A and B but not sinA + sinB

(ii) True, sin30° = 1/2 and sin60° = √3/2

(iii) False, because cos30°= √3/2 and cos60° = 1/2

(iv) False, as it only applies for Theta value 45°

(v) True, because 0/X = Undefined