*a) In the right triangle of the figure below, determine the measurements of x and y indicated (Use: sin 65 ° = 0.91; cos 65 ° = 0.42; tg 65 ° = 2.14)*

*b) Considering the right triangle ABC of the figure, determine the measures a and b indicated. (Sen 60 ° = 0.866)*

*c) It is known that in an isosceles right triangle each congruent side measures 30 cm. Determine the measure of the hypotenuse of this triangle.*

*In the triangles of the figures below, calculate tg Â, tg Ê, tg Ô:*

*d) *

and)

f)

*g) Knowing that the right triangle of the figure below is isosceles, what are the values of tg Â and tg Ê?*

*h) Find the measurement RA knowing that tg Â = 3*.

*Find x and y:*

i)

j)