Answer:
65.17°
Step-by-step explanation:
→ Inverse cosine -0.42
65.17°
→ As the domain is between 0 and 360, any negative values can be ignored
Let's remember orders of operations as we go through the craze of this problem.
We need to multiply or divide from left to right.
3w-6w+3w×7×7×6×5÷9+2
3w-6w+21w×7×6×5÷9+2
3w-6w+147w×6×5÷9+2
3w-6w+882w×5÷9+2
3w-6w+4,410w÷9+2
3w-6w+490w+2
-3w+490w+2
487w+2
To check that we simplified the expression right, I like to put in 1 for w and test it in the original expression and then the simplified expression (not needed).
487+2=489
3-6+3×7×7×6×5÷9+2=489
So that expression equals 487w+2.
Answer:
Jim is 12.87 meters away from the shark.
Step-by-step explanation:
We are given that,
Distance between Jim and Tara = 20 meters.
The angle of depression of the shark from Jim and Tara is 47° and 40° respectively as shown in the figure below.
So, the third angle of the triangle formed is given by,
47° + 40° + ∠S = 180°
i.e. ∠S = 180° - 87°
i.e. ∠S =93°
So, now using the sine ratio formula, we have,

i.e. 
i.e. 
i.e. x = 12.87 meters
Thus, Jim is 12.87 meters away from the shark.
It is (b-5)+6
hope this helps