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If (cos x)/(a)=(cos(x+ theta))/(b)=(cos ...

If `(cos x)/(a)=(cos(x+ theta))/(b)=(cos (x+2 theta))/(c)=(cos(x+3 theta))/(d)` then `(b+d)/(a+c)=`

A

d/a

B

a/d

C

c/b

D

b/c

Text Solution

Verified by Experts

The correct Answer is:
C
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