Questions in trigonometry

Select	Question
	The area of an isosceles triangle is $9c{{m}^{2}}$. If the equal sides are $6cm$ in length, the angle between them is
	If the sides of triangle be 6, 10 and 14 then the triangle is
	In any $\Delta ABC$ if $a\cos B=b\cos A$ , then the triangle is
	In a triangle $ABC,$ if $a\sin A=b\sin B$ , then the nature of the triangle
	If in a triangle $ABC$ , $\cos A+\cos B+\cos C=\frac{3}{2}$ , then the triangle is
	If in a triangle ABC the sides $AB$ and AC are perpendicular, then the true equation is
	In a triangle with one angle of ${{120}^{o}}$ the lengths of the sides form an A. P. If the length of the greatest side is $7cm$ , the area of triangle is
	If the area of a triangle ABC is $\Delta$, then ${{a}^{2}}\sin 2B+{{b}^{2}}\sin 2A$ is equal to
	In a right triangle $AC=BC$ and D is the mid point of AC cotangent of angle $DBC$ is equal to
	If a, b, c are the sides and A, B, C are the angles of a triangle $ABC$ , then $\tan \left( \frac{A}{2} \right)$ is equal to