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olga nikolaevna [1]
3 years ago
10

Find cos theta, please help!

Mathematics
2 answers:
steposvetlana [31]3 years ago
8 0

Answer:

21/29

Step-by-step explanation:

Recall that the cosine ratio is the adjacent side over the hypotenuse.

From the triangle, the adjacent side to angle Θ is 42. The hypotenuse (opposite from the right angle) is 58. Therefore:

\cos(\theta)=adj/hyp

Substitute 42 for the adjacent side and 58 for the hypotenuse:

\cos(\theta)=42/58

Reduce:

\cos(\theta)=21/29

And we're done!

mr Goodwill [35]3 years ago
5 0

Answer:

21/29

Step-by-step explanation:

\cos \theta =  \frac{AC}{AB}  =  \frac{42}{58}  =  \frac{21}{29}  \\

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