Answer:
see explanation
Step-by-step explanation:
To verify cos²A + sin²A = 1 with A = 90° , then
cos²90° + sin²90°
= (0)² + (1)²
= 0 + 1
= 1
3 and 4 it is 60
is the answer
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A... 12
boat 75
Car--360/6=60
Train--400/8=50
Boat--375/5=75
