sec2 (= is true if and only if
x+ y (0
x=y, x(0
x=y
x(0, y(0
The number of real solutions of tan-1 is
zero
one
two
inifinite
In a triangle PQR, (R=(/2. If tan (P/2) and tan (Q/2) are the roots of the equation ax2 + bx + c=0(a(0) then.
a + b= c
b + c= a
a + c= b
b = c
If ( + (=(/2 and ( +( =(, then tan ( equals
2(tan ( + tany)
tan( + tany
tan( + 2tany
2tan( + tany
/
3/14
3/2
1/3
1/6
The angles of elevation of an artificial satellite measured from two earth stations are 30o and 40o respectively. If the distance between the earth stations is 4000 km, then the height of the satellite is:
2000 km
6000 km
3464 km
2828 km
If sin ?=a and sec ?+ cosec ?=b, then the value of b(a2-1) is equal to:
2a
3a
0
2ab
A tree 6 m tall casts a 4 m long shadow. At the same time, a flag pole casts a shadow 50 m long. How long is the flag pole?
75 m
100 m
150 m
50 m
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
The reduced form of cos6 x + sin6 x + 3 cos2 x sin2 x is equal to:
2
0
Sin3 x + cos3 x2
1