For the first one, you're answer would be AC. since C is also a right angle, and angle A is hypnotenuse to C
Answer:
8
Step-by-step explanation:
one negative* one negative = always positive
Lets calculate gear ration T2/T1
so the gear ratio will be 1.6 it simply means dat if u rotate large gears one full revolution it tends to turn another short wheel to 1.6 revs, so in ur qtion the large whell revs 100 den u must multiply wid 1.6*100= 160 revs
