Given triangle is a right angle triangle so we are allowed to use trigonometric formulas.
We want to find Hypotenuse using angle A and base 7 cm
so right choice is to use cosine





Hence value of side AB is approx 7.72 cm.
➣ Assignment: 
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➣ Answer: 
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Explanation: ↓↓↓↓↓
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➤ [ Step One ] Divide Both Sides By 3

➤ [ Step Two ] Simplify

➤ [ Step Three ] Subtract 6 From Both Sides

➤ [ Step Four ] Simplify

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Answer:
9,676,800
Step-by-step explanation:
You have to turn them into mixed numbers. 10/3 divided by 15/8. Now you have to multiply the first number by the reciprocal of the second. 10/3 times 8/15. The answer is 80/45 or 1 7/9.