Sail E0 Webinar
Question


If sin α= P and tan α= Q, find the value of 1P21Q2  ?


Options:
A .   0
B .   1
C .   2
D .   -1
Answer: Option B
:
B

Option (b)


Assume a 45-45-90 triangle


sin α= P = 12 . (Sin= opposite side/ hypotenuse)


tan α= Q = 1 (Tan = opposite side/ adjacent side)


1P21Q2 = 2-1 =1


If Sin α= P And Tan α= Q, Find The Value Of 1P2−1Q2  ?...


Shortcut


cosec2αcot2α = 1 is a trigonometric identity


If you are not aware of this identity, substitute α = 45.


 



Was this answer helpful ?
Next Question

Submit Solution

Your email address will not be published. Required fields are marked *

More Questions on This Topic :


Latest Videos

Latest Test Papers