$66. Since he worked 5.5 hours at a rate of $12 per hour, you can simply multipy the amount of hours worked by the rate. $12 x 5.5hr = $66.
9514 1404 393
Answer:
a = √(b² +c² -2bc·cos(A))
a = √(c² -b²)
Step-by-step explanation:
For sides a, b, c, and opposite angles A, B, C, the general form of the law of cosines is ...
a² = b² + c² -2bc·cos(A)
An expression for 'a' can be written by taking the square root.
a = √(b² +c² -2bc·cos(A))
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If you recognize that cos(A) = b/c, then a substitution can be made:
a = √(b² +c² -2(bc)(b/c)) = √(b² +c² -2b²)
a = √(c² -b²) . . . . . . . same as the Pythagorean theorem
Answer:
I made the assumption those were right triangles.
Step-by-step explanation:
I like your 30 there.
I found the length in orange by doing 55-30=25.
Now we can try to find the length in light purple by doing orange length plus the length you found which is 25+30=55.
So we can use a trig function to find .
I made another picture to focus our problem more.
Now if you look at the triangle we have here and refer to trig right triangle definitions, we can setup an equation form this.
The opposite side of the angle, whose measurement is degrees, is .
The adjacent side of the angle, whose measurement is degrees, is .
So I will use the tangent ratio.
Multiply both sides by 55:
Now it is handy dandy calculator punching in time:
Answer:
1181533
Step-by-step explanation:
It's called brainliest.
You can use Math way for that btw.