Choose the correct options for the following questions.
Two forces of 10N and 8N are applied simultaneously to a body. The maximum value of their resultant is:
Difficulty: Easy
A:
2N
B:
-2N
C:
18N
D:
36N
Two forces each of magnitude F act perpendicular to each other. The angle made by the resultant force with the horizontal will be:
Difficulty: Hard
A:
$30^{\circ}$
B:
$45^{\circ}$
C:
$60^{\circ}$
D:
$90^{\circ}$
All trigonometric functions are positive in _______ quadrant:
Difficulty: Easy
A:
I
B:
II
C:
III
D:
IV
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