To use mental math think instead of 81 to 80 and 16 to 10 and subtract that and add the other numbers and subtract that and you will have your answer presto!
Answer:
angle KMI = 136°
I hope this may be helpful
Answer:
Option 2:
tangent squared (theta) + 1 = secant squared (theta)
Step-by-step explanation:
1 + tan²X
1 + sin²X/cos²X
(cos²X + sin²X)/cos²X
1/cos²X
sec²X