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Byju's Answer
Standard XII
Physics
Vector Addition
If asinθ +b...
Question
If
a
s
i
n
θ
+
b
c
o
s
θ
=
m
and
a
c
o
s
θ
−
b
s
i
n
θ
=
n
, prove that
m
2
+
n
2
=
a
2
+
b
2
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Q.
Prove the following trigonometric identities.
If a cos θ + b sin θ = m and a sin θ − b cos θ = n, prove that a
2
+ b
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= m
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+ n
2