trigonometry

Related Questions

• If in a triangle $ABC$ , $\cos A+\cos B+\cos C=\frac{3}{2}$ , then the triangle is

  ---

• If $A+B=\frac{\pi }{4},$then $(1+\tan A)(1+\tan B)=$

  ---

• If a triangle $PQR$ , $\sin P,\ \sin Q,\ \sin R$ are in A.P., then

  ---

• A house subtends a right angle at the window of an opposite house and the angle of elevation of the window from the bottom of the first house is 60°. If the distance between the two houses be 6 metres, then the height of the first house is

  ---

• The ratio of the sides of triangle ABC is $1:\sqrt{3}:2$. The ratio of $A:B:C$ is

  ---