Asked by girly girl

Hi! I am super confused with this question and really need help.

In a right triangle with a leg of 4 and a hypotenuse of 8, find the measures of all angles.

a. 27 degrees, 63 degrees, 90 degrees
b. 30 degrees, 60 degrees, 90 degrees
c. 40 degrees, 50 degrees, 90 degrees
d. 45 degrees, 45 degrees, 90 degrees

Answers

Answered by Henry
a = 4, b = ?, c = 8.
a^2 + b^2 = c^2.
4^2 + b^2 = 8^2,
b = 6.93.

Cos B = a/c = 4/8 = 0.50.
B = 60o.

A + B = 90o
A + 60 = 90,
A = 30o.

C = 90o.

So A = 30o, B = 60o, and C = 90o.
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