Trigonometry

Sort Difficulty Level: Entry Level | Moderate | Difficult
If cosA + cos2A = 1, then sin2A + sin4A is equal to....
1
yes
1/2
no
0
no
-1
no
Show Answer
sec4A- sec2A is equal to....
Tan2A - tan4A
no
Tan2A + tan4A
yes
Cos4A - cos2A
no
Cos2A - cos4A
no
Show Answer
If sinA+ cosA  = √2 cos (90 - A), then cotA is....
√2 + 1
no
0
no
2
no
√2 - 1
yes
Show Answer
If 2 – cos2A= 3 sinA.cosA, sinA ≠ cosA
then tan A is....
1/2
yes
0
no
2/3
no
1/3
no
Show Answer
If 4x = sec A and 4/x = tan A then
8 (x2-1/x2) is....

1/16
no
1/8
no
1/2
yes
1/4
no
Show Answer
The least value of 2sin2A + 2cos2A is....
3
no
5
no
1
no
2
yes
Show Answer
If cosθ + secθ = √3, then the value of cos3θ + sec3θ is.....
2
no
1
no
0
yes
4
no
Show Answer
From an aeroplane vertically above a straight road the angle of depressions of two consecutive kilometer stones on the same side are 30º and 45º. Then at what height the aeroplane is flying?
2.22 km
no
2.27 km
no
2.365 km
no
1.365 km
yes
Show Answer
A man is standing on the 8 m long shadow of a 6 m long pole. If the length of his shadow is 2.4 m, what is the height of the man?
1.4 m
no
1.6 m
no
18 m
yes
2.0 m
no
Show Answer
If A and B are complementary angles, then the value of

sin A cos B + cos A sin B - tan A tan B + sec2 A - cot2 B is.....

2
yes
0
no
1
no
-1
no
Show Answer

Articles

Advertisement