Question

डेंफा फाइंड एंगल pt-1 एंड एंगल ऑफ़ 30 डिग्री​

Answer 1

Answer:

An alternative way is to actually treat it as a DS question. Take the given info and try to find out whether you will have a fixed perimeter of PQRS. Try to draw PQRS from the given info and find out whether the perimeter has a unique value.

Let me show you why statement 2 alone is sufficient.

Given data:

Angle QRS = 120 degrees

ST = 3

PT = 1

QT = 2

Angle QTP = 60 degrees

Angle RST = w = 45 degrees (from statement 2)

Let's start with angle QRS. Make an angle of 120 degrees. We don't know the lengths of QR and RS so we don't know where Q and S will lie. Now we have to make the line ST such that the angle is 45 degrees. Many such lines are possible since we don't know where S lies. We have made 3 such lines as an example.