ABC is a triangle with sides AB = 6 cm, BC = 10 cm and CA = 8 cm. With vertices A, B and C as centres, three circles are drawn each touching the other two externally.

What is the sum of the radii of the circles?

Let p = tan(2α) – tan(α) and q = cot(α) – cot(2α). What is tan²(α)…

Let p = tan(2α) – tan(α) and q = cot(α) – cot(2α). What is (p…

Let p = tan(2α) – tan(α) and q = cot(α) – cot(2α). What is (p…

What is MN equal to?

What is PN equal to?The top (M) of a tower is observed from points P,…