In the figure above, `Delta ABC` is similar to `Delta XYZ`, what is the value of cos A?

In the figure above, triangle ABC is similar to triangle DEF . What is the value of cos(E) ?

In the figure above, triangleABC is a right triangle. What is the value of x?

In triangle XYZ above, what is the value of p?

In the figure shown above, ABC is a triangle right angled at B. What is the value of angle A, in degrees?

In the figure above, what is the area of triangle YAZ?

In a Delta ABC, if cos A=cos B cos C, what is the value of tan A-tan B tan C?

In a Delta ABC, if cos A=cos B cos C, what is the value of tan A-tan B-tan C?

In the figure above, triangle PQR is a similar to triangle XYZ (not shown) . IF PQ:XY=QR:YZ=PR:XZ=4:5 , what is the measure , in degrees, of angle Y?

In the figure, ABC is a right triangle. What is the value of y?