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Byju's Answer
Standard IX
Mathematics
Complementary Ratios
Evaluate :cos...
Question
Evaluate :
c
o
s
48
∘
−
s
i
n
42
∘
=
___
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Solution
c
o
s
48
∘
−
s
i
n
42
∘
=
c
o
s
(
90
∘
−
42
∘
)
−
s
i
n
42
∘
=
s
i
n
42
∘
−
s
i
n
42
∘
=
0
(As, cos (
90
∘
- A) = sin A)
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Similar questions
Q.
Evaluate :
cos
48
∘
−
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∘
___
Q.
Question 1 (iii)
Evaluate :
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Show that
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