20-05-2021
Mathematics

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I just need like a step by step I haven't understood what my teacher has taught me here

I just need like a step by step I havent understood what my teacher has taught me here class=

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meowmeow223334 meowmeow223334

20-05-2021

You are trying to find the side between the right angle and the degree (This is known as the adjacent)
You are given degree 42
You also given the longest side of 19 (This is known as the hypothenuse)
Cosine: adjacent/hypothenuse
Cos42 = x/19
0.7431448255 = x/19
x = 19 * 0.7431448255
x = 14.11975168, round to tenth

Solution: x = 14.1

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