I have 2 problem that I don't know if I did it right. 1) right triangle with base=12 altitude=c, hypotenuse=d. 71 degrees is opposite 90 degrees. need to find C and d. I did tan 71=d/12. = 12 x 2.9042 = d = 34.85

Question

Do I do the same process to get c?

2) right triangle with altitude=8, base=e, hypotenuse=f. 28 degree opposite 90 degree. I did sin28 deg= 8f/y= y=8/sin28 = y= 8/.4695. f=17.039 or 17. Again, do I do the same process for e?

Answer 1

in a triangle, angles are opposite sides. Two angles cannot be opposite each other.

Using the tan function, the hypotenuse is not used. If the base 12 is opposite the 71° angle, then

12/d = sin 71°
12/c = tan 71°

Better review your trig function definitions.