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What is answer to this very hard question

What is answer to this very hard question-example-1
User Dvnguyen
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2 Answers

3 votes

Answer:

66.4

Explanation:

Hope this helped!

User Massimo Costa
by
7.9k points
1 vote

Check the picture below.


cos(Y )=\cfrac{\stackrel{adjacent}{6}}{\underset{hypotenuse}{15}}\implies cos(Y)=\cfrac{2}{5}\implies cos^(-1)[cos(Y)]=cos^(-1)\left( \cfrac{2}{5}\right) \\\\\\ Y=cos^(-1)\left( \cfrac{2}{5}\right) \implies Y\approx 66.4^o

Make sure your calculator is in Degree mode.

What is answer to this very hard question-example-1
User Cfg
by
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