gaptoothTea gaptoothTea

14-08-2020
Mathematics

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Use trig ratios to find the measure of the angle in this triangle. A .cos^-1(4/5) B. tan(4/5) tan^-1(4/5) C. sin(4/5) D. cos(4/5) E. sin^-1(4/5)

Use trig ratios to find the measure of the angle in this triangle A cos145 B tan45 tan145 C sin45 D cos45 E sin145 class=

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9ca5r82 9ca5r82

14-08-2020

Answer:

The answer is A

Step-by-step explanation:

Step 1: Use Cosine to find ∅

Cos∅=[tex]\frac{4}{5}[/tex]

∅=Cos[tex]^{-1}[/tex]([tex]\frac{4}{5}[/tex])

Therefore the answer is A

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