The legs of a right triangle measuring 5 inches and 7 units. If theta is the angle between the 5-inch leg and the hypotenuse, cos theta = ..what?

Question

anonymous · Answer

Availdable answers are  .71    .81    .07    and .58

hartnn · Answer

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do u know how to find cos theta ?

hartnn · Answer

first find hypotenuse using pythagoras theorem, can u?

jiteshmeghwal9 · Answer

$$Cos  \space \theta=\frac{base}{hypotenuse}$$

anonymous · Answer

I know the pythagorean theorem yes

hartnn · Answer

so hypotenuse =?

anonymous · Answer

7 squared plus 5 squared  =74 and the square root of that is about 8.6

anonymous · Answer

Correct?

hartnn · Answer

now cos theta is the ratio of adjacent side to hypotenuse, 
yes that is correct

hartnn · Answer

which side is adjacent side?

anonymous · Answer

Next to the angle right?
8.6/5?

hartnn · Answer

its adjacent side/ hypotenuse
so 5/8.6
ok?

anonymous · Answer

OH okay 5/8.6
so it is .58?

hartnn · Answer

yup thats correct and 
$\huge \color{red}{\text{Welcome to Open Study}}\ddot\smile$

anonymous · Answer

TYVM! and I am sure to be here often! :D

hartnn · Answer

welcome ^_^