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IIT JEE

Practice

KVPY Mathematics

Probability

Quick practice

Question 1 of 5

If a sec\theta-c \tan \theta=d { and } b \sec \theta+d \tan \theta=c , then

A

a^2+d^2=b^2+c^2

B

a^2+b^2=c^2+d^2

C

ab = cd

D

&a^2+c^2=b^2+d^2

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