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Kokila Lakshmi

· started a discussion

· 1 Months ago

correct answer. (Question: 252291.0 )

please confirm whether the ans is option c or option d?

Question:
If x sin \(\theta\) = y cos \(\theta\) =  \(\cfrac{2z\ tan\ \theta}{1-tan^2\ \theta}\) , then what is 4z2(x2 + y2) equal to?
Options:
A) (x2 + y2)3
B) (x2 – y2)3
C) (x2 – y2)2
D) (x2 + y2)2
Solution:

Ans: (c) 

Rahul Bharadwaj

· commented

· 1 Months ago

C is correct

Shashank Shah

· commented

· 1 Months ago

C

Vaibhav Yadav

· commented

· 1 Months ago

sin @= (z/y)(2ztan@/1-tan^2@) similarly find cos @ square and add both ...c is the answer

Sohil Rajput

· commented

· 1 Months ago

d hoga ssc tube

Vishal Rathee

· commented

· 1 Months ago

c

rahul

· commented

· 1 Months ago

d
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