Flag Discuss with colleagues and IITians> Please answer to the question asap pls wi...
question mark

Please answer to the question asap pls with all the steps so that i can understand

Harshitha , 5 Years ago
Grade 8
anser 1 Answers
Aditya Gupta

Last Activity: 5 Years ago

hello harshitha thanks 4 d ques.
we can write the eqn as
4s^2 + 1/s^2 + t^2 + 1/t^2= 6 where s= sinx and t= tanx
or (4s^2 + 1/s^2 – 4) + ( t^2 + 1/t^2 – 2)= 0
(2s – 1/s)^2 + (t – 1/t)^2= 0
since the sum of 2 squares can be zero IFF both of them are zero, so
2s – 1/s= 0 and t – 1/t= 0
or s^2= ½ and t^2= 1 or s^2/c^2= 1 or s^2= c^2 or 2s^2= 1 or s^2= ½ 
so, both the conditions give us the same result:
s^2= ½ 
or sin^2x= sin^2(pi/4)
or x= npi ± pi/4
option 1
kindly approve :)

Provide a better Answer & Earn Cool Goodies

Enter text here...
star
LIVE ONLINE CLASSES

Prepraring for the competition made easy just by live online class.

tv

Full Live Access

material

Study Material

removal

Live Doubts Solving

assignment

Daily Class Assignments


Ask a Doubt

Get your questions answered by the expert for free

Enter text here...