I think 0.3 is less 7.85 because there is a 1 on the end that was is a 3 and if you round it would be 0
This is the answer 4828.03
Answer:
Option D. 3.73
Step-by-step explanation:
we know that

and

step 1
Find cos(X)
we have

we know that

substitute




step 2
Find tan(x)

substitute

step 3
Find sin(y)
we have

we know that

substitute




step 4
Find tan(y)

substitute

step 5
Find tan(x+y)

substitute
![tan(x+y)=[1/\sqrt{3}+1}]/[{1-1/\sqrt{3}}]=3.73](https://tex.z-dn.net/?f=tan%28x%2By%29%3D%5B1%2F%5Csqrt%7B3%7D%2B1%7D%5D%2F%5B%7B1-1%2F%5Csqrt%7B3%7D%7D%5D%3D3.73)
For this question, we must use BIDMAS
Brackets
Indices
Division
Multiplication
Addition
Subtraction
26.6 x 24.4 / 5.67 x 4.02
First, round all the values to their first significant figure
30 x 20 / 6 x 4
The first occurring operation in BIDMAS is Division
20/6 = 3 1/3
Now do the multiplication
30 x 3 1/3 x 4 = 400
Or you can round to the nearest whole number (although it can be more difficult if doing sums in your head)
27 x 24 / 6 x 4
27 x 4 x 4
27 x 16 = 432
The more accurately you round, the closer the estimation is to the actual answer (≈460)
1 Sig Fig = 400
Whole number = 432