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Standard X
Mathematics
Trigonometric Ratio(sin,cos,tan)
44. If cosec-...
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44. If cosec-sin=3a,sec-cos=3b then 2a2b(2a+2b)
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Similar questions
Q.
If
c
o
s
e
c
θ
−
s
i
n
θ
=
a
3
and
s
e
c
θ
−
c
o
s
θ
=
b
3
, then
a
2
b
2
(
a
2
+
b
2
)
=
______.
Q.
Prove
sin
3
A
cos
3
(
B
−
C
)
+
sin
3
B
cos
3
(
C
−
A
)
+
sin
3
C
cos
3
(
A
−
B
)
=
sin
3
A
sin
3
B
sin
3
C
.
Q.
In a triangle prove that
sin
3
A
+
sin
3
B
+
sin
3
C
=
3
cos
(
A
/
2
)
cos
(
B
/
2
)
cos
(
C
/
2
)
+
cos
(
3
A
/
2
)
cos
(
3
B
/
2
)
cos
(
3
C
/
2
)
.
Q.
If
A
+
B
+
C
=
π
and
cos
A
+
cos
B
+
cos
C
=
0
=
sin
A
+
sin
B
+
sin
C
then
cos
3
A
+
cos
3
B
+
cos
3
C
=
1
Q.
sin A + sin B =
√
3
(cos B – cos A)
⇒
sin 3A + sin 3B =
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