Answers need help!!!!!!

Mathematics

1 answer:

Gala2k [10]2 years ago

4 0

<h3>Step-by-step explanation:</h3>

Pythagorus theorum:

9² = 3² + YZ²

81 - 9 = YZ²

√72 = YZ

∴YZ= 8.48 ≈ 8.5

Trigonometry:

We have adjacent as 3, and hypotenuse as 9

cos X = 3/9

X= cos∧-1 (3/9) → [cos inversed]

∴X= 70.5°

We have opposite as 3 and hypotenuse as 9

sin Z= 3/9

Z= sin∧-1 (3/9)→ [sin inversed]

∴Z= 19.47 ≈ 19.5

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