Sin 60° has the same value as
I. Sin 120°
II. cos 240°
III. -sin 150°
IV. cos 210°
V. sin 240°
I only
II only
IV only
III only
IV and V only
Correct answer is A
In the second quadrant, \(\sin 120 = \sin (180 - 120)\)
= \(\sin 60\)
20o
50o
55o
70o
75o
Correct answer is C
< PTQ = 25° (base angles of an isos. triangle)
\(\therefore\) < PQT = 180° - (25° + 25°) = 130° (sum of angles in triangle PQT)
\(\therefore\) < RST = 130° - 75° = 55° (exterior angle = sum of 2 opp. interior angles)
A regular polygon has each of its exterior angles as 18o. How many sides has the polygon
10
11
12
20
24
Correct answer is D
360/18 = 20
Which of the following structures control the activities of the living cell?
Nucleus
Centrosome
Chloroplast
Golgi body
Mitochondrion
Correct answer is A
No explanation has been provided for this answer.
Which of the following methods of reproduction is common to Paramecium and Amoeba?
Conjugation
Sexual reproduction
Binary fission
Budding
Fragmentation
Correct answer is C
No explanation has been provided for this answer.
WAEC Subjects
Aptitude Tests