M∠1=45° and m∠3=65°

What is m∠4?

2. In right △ABC with right angle B, m∠A = (3x-8) ° and m∠C = (x-2) °.

What is m∠A?

47°

67°

25°

92

In Right Δ ABC with right angle B,

∠A = (3 x - 8) °, ∠B=90°, ∠C = (x-2) °

∠A+∠B+∠C=180°[∠ sum property of triangle]

3 x-8+90 + x-2=180

Adding and subtracting like terms

4 x-10+90=180

4 x+80=180

4 x=180-80

4 x=100

x=100/4

x=25°

∠A=3*25-8=75-8=67°

Do you know the answer to number one?