logo

Ask Questions, Get Answers

 
X
 Search
Want to ask us a question? Click here
Browse Questions
Ad
Home  >>  CBSE XI  >>  Math  >>  Trigonometric Functions
0 votes

True-or-False :One value of $\theta$ which satisfies the equation $\sin ^4\theta-2\sin ^2\theta-1$ lies between 0 and $2\pi$

$\begin{array}{1 1}(A)\;\text{True}\\(B)\;\text{False}\end{array} $

Can you answer this question?
 
 

1 Answer

0 votes
$\sin ^4\theta-2\sin ^2\theta-1=0$
$(\sin ^2+1)(\sin ^2-1)=0$
$\sin ^4\theta-1=0$
Value of $\theta$ between $\large\frac{\pi}{2}$ and $\large\frac{3\pi}{2}$
Hence the given statement is False
answered May 20, 2014 by sreemathi.v
 

Related questions

Ask Question
student study plans
x
JEE MAIN, CBSE, NEET Mobile and Tablet App
The ultimate mobile app to help you crack your examinations
Get the Android App
...