Question

The equation tan(55 degree) equals StartFraction 15 Over b EndFraction can be used to find the length of Line segment A C.

Triangle A B C is shown. Angle B C A is a right angle and angle B A C is 55 degrees. The length of A C is b and the length of hypotenuse B C is 15 centimeters.

What is the length of Line segment A C? Round to the nearest tenth.

3.0 cm.
9.8 cm.
10.5 cm.
12.8 cm.

Answer 1

AC is b

`tan55 = (15)/(b)`

15/tan55 = b

tan 55 = 1.428

15/1.428 = 10.5 cm = AC

Answer 2

THIS IS THE ANSWER

Explanation: