- Home
- Standard 11
- Mathematics
Trigonometrical Equations
easy
${\rm{cosec}}\theta + 2 = 0$ को सन्तुष्ट करने वाला $\theta (0 < \theta < {360^o})$ का मान है
A
${210^o},{300^o}$
B
${240^o},{300^o}$
C
${210^o},{240^o}$
D
${210^o},{330^o}$
Solution
${\rm{cosec }}\theta + 2 = 0$
$ \Rightarrow $ $\sin \theta = – \frac{1}{2}$
$ \Rightarrow $ $\theta = 210^\circ $ या $330^\circ $.
Standard 11
Mathematics
