If cos θ + sin θ = √2 cos θ, then cos θ - sin θ is
The value of 1/cosec θ - cot θ
1/sin θ is
The tops of two poles of height 24 m and 36 m are connected by a wire. If the wire makes an angle of 60° with the horizontal, then the length of the wire is
In a triangle, if three altitudes are equal, then the triangle is
A, B, C, D are four points on a circle. AC and BD interest at a point E such that ∠BEC = 1300 and ∠ECD = 200. Then, ∠BAC is
A vertical stick 12 cm long casts a shadow 8 cm long on the ground. At the same time, a tower casts a shadow 40 m long on the ground. The height of the tower is