ERRE Given: ZABC is a right angle and ZDEF is a right angle.
Prove: All right angles are congruent by showing that ABC – DER
What are the missing reasons in the steps of the proof?
LABC, ZDEF are
right angles
MZABC = 90°
m_DEF = 90°
m2ABC = m_DEF
ZABO = ZDEF
Given
B
A:
B:
C:

answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet

hello,

as   long as they add up to 180 its correct.