Answer: 1. Since TL is a diameter, we know that mICR + m/RCL = 90°. Substituting the given values, we get:
(3x + 5)° + (x - 1)° = 90°
Simplifying the equation, we get:
4x + 4 = 90
Solving for x, we get:
x = 22
Therefore, x = 22.
2. Since TL is a diameter, we know that mICR = 90°. Substituting the value of x, we get:
mICR = (3x + 5)° = (3 × 22 + 5)° = 71°
Therefore, mICR = 71°.
3. Since TL is a diameter, we know that mILR = 180° - mICR - m/RCL. Substituting the values of x, we get:
mILR = 180° - (3x + 5)° - (x - 1)° = 180° - 4x - 4°
Substituting the value of x, we get:
mILR = 180° - (4 × 22 + 4)° = 52°
Therefore, mILR = 52°.
Explanation: