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aaamanda99
20.04.2021 •
Mathematics
Eight thousand eight and eight tenths in standard form help plz
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Ответ:
m
Step-by-step explanation:
Ответ:
8,088.8
Step-by-step explanation:
Ответ:
cosθ = 0.87
Step-by-step explanation:
Identity given,
sin²θ + cos²θ = 1
Values of sinθ = 0.5
Since, angle θ is in the first quadrant, all values of cosθ and sinθ will be positive.
Therefore, cos²θ = 1 - sin²θ
cos²θ = 1 - (0.5)²
cos²θ = 1 - 0.25
cosθ = √(0.75)
= 0.86603
≈ 0.87
Therefore, value of cosθ will be 0.87