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अर्कज ..
Subject: Maths
, asked on 22/5/18
No links
Question No. 3
If
2
cos
θ
+
s
e
c
θ
+
3
=
0
,
t
h
e
n
θ
lies in
A. quadrant I or quadrant II
B. quadrant I or quadrant III
C. quadrant II or quadrant III
D. quadrant II or quadrant IV
Answer
1
अर्कज ..
Subject: Maths
, asked on 22/5/18
Q). If
tan
50
°
=
a
, then what is the value of
tan
70
°
-
tan
20
°
?
A. 0
B. 1
C. a
D. 2a
Answer
2
अर्कज
Subject: Maths
, asked on 22/5/18
Solve this:
Question No. 18
What is the general solution of :
sin
2
x
-
2
sin
x
-
2
sin
2
x
2
=
0
?
A
x
=
nπ
or
nπ
+
-
1
n
π
6
,
n
∈
Z
B
x
=
nπ
or
nπ
+
-
1
n
+
1
π
6
,
n
∈
Z
C
x
=
2
nπ
or
nπ
+
-
1
n
π
6
,
n
∈
Z
D
x
=
2
nπ
or
nπ
+
-
1
n
+
1
π
6
,
n
∈
Z
Answer
1
अर्कज
Subject: Maths
, asked on 22/5/18
No links:
Question No. 8
Use the following information to answer the next question.
cos
2
y
-
15
°
+
sin
2
y
-
15
°
=
3
2
What
is
the
value
of
y
0
≤
y
≤
90
°
?
(A) 0
o
(B) 5
o
(C) 15
o
(D) 30
o
Answer
2
अर्कज
Subject: Maths
, asked on 22/5/18
Let sin
x
+ sin
y
=
m
and cos
x
– cos
y
=
n
.
If
cos
2
x
+
y
2
cos
2
x
-
y
2
=
n
2
k
1
-
m
2
-
n
2
m
2
k
2
+
m
2
+
n
2
then
(A)
k
1
= 4 (B)
k
2
= 4 (C) (A)
k
2
= 0 (D)
k
1
= 0
Answer
1
अर्कज
Subject: Maths
, asked on 22/5/18
No links
Question No. 14.
What is the graph of 3 sin 2x, where 0
≤
x
≤
2
π
?
A.
B.
Answer
3
अर्कज
Subject: Maths
, asked on 22/5/18
Q.1. In
△
A
B
C
,
i
f
sin
2
A
2
-
sin
2
B
2
+
sin
2
C
2
+
2
cos
A
2
sin
B
2
cos
C
2
=
k
, the value of k is
A. 1
B. 2
C. - 1
D. - 2
Answer
1
अर्कज ..
Subject: Maths
, asked on 22/5/18
Q. Solve :
sin
8
x
-
cos
8
x
.
Answer
2
अर्कज ..
Subject: Maths
, asked on 22/5/18
Solve this:
Question No. 22
What is the general solution of the equation (sin 2x+ 2 sin 4x + sin 6x = 0)?
A
x
=
mπ
4
,
m
∈
Z
B
x
=
mπ
2
,
m
∈
Z
C
x
=
2
m
+
1
π
4
,
m
∈
Z
D
x
=
2
m
+
1
π
2
,
m
∈
Z
Answer
1
अर्कज ..
Subject: Maths
, asked on 22/5/18
Q.24. In
△
PQR; if sec R = 2 sin Q cosec P, then
△
PQR is
A. an isosceles triangle
B. an equilateral triangle
C. a right-angled triangle
D. a right-angled isosceles triangle
Answer
1
अर्कज ..
Subject: Maths
, asked on 22/5/18
Q.25. What is the simplified form of the expression
c
o
t
8
°
-
tan
8
°
×
cos
29
°
-
sin
29
°
cos
29
°
+
sin
29
°
?
A. 1
B. 2
C. sin 16
°
D. cos 58
°
Answer
1
अर्कज
Subject: Maths
, asked on 22/5/18
Solve this:
Question
No
.
2
The
expression
8
sin
8
x
-
cos
8
x
can
be
expressed
as
A
cos
2
x
+
cos
6
x
B
cos
2
x
+
3
cos
6
x
C
-
7
cos
2
x
+
cos
6
x
D
2
sin
4
x
cos
2
x
-
1
Answer
1
अर्कज
Subject: Maths
, asked on 22/5/18
No links , the alternative solution is also there
Answer
1
अर्कज
Subject: Maths
, asked on 22/5/18
In ?ABC, sin^2(A\2) ?sin^2(B\2) +sin^2(C\2)+ 2cos(A\2) sin(B\2) cos(C\2)= k then the value of k is
Answer
2
Uma
Subject: Maths
, asked on 21/5/18
sin2x sinx+cos6x sin3x/sin2x sinx +sin6x cosx = cot5x
Answer
1
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Next
What are you looking for?
Question No. 3
If lies in
A. quadrant I or quadrant II
B. quadrant I or quadrant III
C. quadrant II or quadrant III
D. quadrant II or quadrant IV
A. 0
B. 1
C. a
D. 2a
Question No. 18
What is the general solution of :
Question No. 8
Use the following information to answer the next question.
(A) 0o
(B) 5o
(C) 15o
(D) 30o
If then
(A) k1 = 4 (B) k2 = 4 (C) (A) k2 = 0 (D) k1 = 0
Question No. 14.
What is the graph of 3 sin 2x, where 0 x 2?
A.
B.
A. 1
B. 2
C. - 1
D. - 2
Q. Solve : .
Question No. 22
What is the general solution of the equation (sin 2x+ 2 sin 4x + sin 6x = 0)?
A. an isosceles triangle
B. an equilateral triangle
C. a right-angled triangle
D. a right-angled isosceles triangle
?
A. 1
B. 2
C. sin 16
D. cos 58