I just need help with 3 questions

Question

anonymous · Answer

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.

mertsj · Answer

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mertsj · Answer

Perhaps that will help you figure out the first one.

anonymous · Answer

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

anonymous · Answer

Would the first one be 6. something?

anonymous · Answer

use the sine ratio to find x.

sin50 = opp./hyp.

sin50 = x/10

x = 10 x sin50

solve for x.