Embibe Experts Solutions for Exercise 18: Assignment

If $\sin \theta =K,-1\le K\le 1$, then number of values of $\theta$, for same value of $K$ in $[0,2\pi ]$ may be

If $\sin \theta +\sqrt{3}\cos \theta =6y-y^2-11,\theta \in [0,4\pi ],y\in R$ holds for

The possible value of  $\theta \in [-\pi ,\pi ]$ satisfying the equation  $2(\cos \theta +\cos 2\theta )+(1+2\cos \theta )\sin 2\theta =2\sin \theta$ are -

The number of all possible triplets $(p, q, r)$ such that $p+q\cos 2\theta +r{\sin }^2\theta =0$ for all $\theta$, is

In a triangle $ABC,\frac{a}{b}=2+\sqrt{3},\angle C=60°$, then in the triangle

In a triangle $ABC$ -

In a triangle $ABC$, point $D$ and $E$ are taken on side $BC$ such that $BD=DE=EC$. If angle $ADE=$ angle $AED=\theta$, then

In a $\Delta ABC,a\cos B+b\cos C+c\cos A=\frac{a+b+c}{2}$ then