1
You visited us
1
times! Enjoying our articles?
Unlock Full Access!
Byju's Answer
Standard XII
Mathematics
Trigonometric Ratios of Compound Angles
11. sin(A+B) ...
Question
11. sin(A+B) = sinA.cosB + cosA.sinB prove by vector method.
Open in App
Solution
Suggest Corrections
55
Similar questions
Q.
In any triangle ABC, prove by vector method
a
sin
A
=
b
sin
B
=
c
sin
C
Q.
Prove by the vector method, the law of sine in trignometry:
sin
A
a
=
sin
B
b
=
sin
C
c
Q.
Prove by vector method :
cos
(
A
−
B
)
=
cos
A
.
cos
B
+
sin
A
.
sin
B
.
Q.
cos
(
A
+
B
)
=
cos
A
cos
B
−
sin
A
sin
B
prove by vector method.
Q.
Prove the following trigonometric identities.
1
1
+
sin
A
+
1
1
-
sin
A
=
2
sec
2
A
