If , then ____.
x
____.
None of the above
If , then one of the possible value of is ____.
____.
0
If then ____.
1
None of the above
/
Rational
Irrational
Positive real number
None of the above
/
t1 > t2 > t3 >t4
t4 > t3 > t1 >t2
t3 > t1 > t2 >t4
t2 > t3 > t1 >t4
The number of solutions of the pair of equations
2sin2(- cos2(=0
2cos2(- 3sin(=0
in the interval [0, 2(] is
zero
one
two
four
A 25 m ladder is placed against a vertical wall of a building. The foot of the ladder is 7 m from the base of the building. If the top of the ladder slips 4 m, then the foot of the ladder will slide:
5 m
8 m
9 m
15 m