She should explain how she got 83 and maybe why she guessed 120 before
Answer:
Step-by-step explanation:
What equation??
Answer:

Step-by-step explanation:
-In a right triangle, the Sine of the base acute angle is usually given as:

-In ΔVWX,, VX is the opposite and WV the hypotenuse.
-Therefore, sine of ∠Wis calculated as;

Hence, sine of ∠W is given represented by the ratio 
Answer:
length = 9 cm
Step-by-step explanation:
perimeter = p =26 cm
width = w= 4 cm
perimeter of a rectangle= 2*w+2*L
L= length
so we have:
26 = 2*(4) +2*L
26= 8 +2L
26-8 = 2L
18 = 2L
L= 18/2
L =9 cm = length
The answer to the first one is 72.