Question

I just need help with 3 questions

Answer 1

27. A right triangle has a 50 degree angle. The hypotenuse is 10 cm long. To the nearest tenth, what is the
length of the side opposite the 50 degree angle?

29. Give an example of a radical equation for which all solutions are extraneous. What is the solution to the equation? How do you know?

31. Explain how you would simplify the radical expression 2/√ 5 + 2.

Answer 2

Perhaps that will help you figure out the first one.

Answer 3

For 31., you can rationalize the numerator and denominator.

Answer 4

Would the first one be 6. something?

Answer 5

use the sine ratio to find x.

sin50 = opp./hyp.

sin50 = x/10

x = 10 x sin50

solve for x.