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Byju's Answer
Standard X
Mathematics
Trigonometric Ratios
Δ ABC is righ...
Question
Δ
A
B
C
is right angled at C. Find cos B.
A
A
C
A
B
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B
A
C
B
C
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C
A
B
B
C
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D
B
C
A
B
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Solution
The correct option is
D
B
C
A
B
The cosine of an angle is the ratio of the length of the adjacent side to the length of the hypotenuse.
Δ
A
B
C
with the right angle at C is the one shown in the figure,
c
o
s
B
=
Adjacent side
Hypotenuse
=
B
C
A
B
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