Answer:
Step-by-step explanation:
First, instead of doing 1395, let's find its coterminal angles. We can do so by subtracting 360 until we reach a solvable range. So:
This is still too high, continue to subtract:
So, instead of 1395, we can use just -45.
So, evaluate each trig function for -45:
1)
Remember that we can move the negative inside of the sine outside. So:
Remember the sine of 45 from the unit circle:
2)
Remember that we can ignore the negative inside of a cosine function. So:
Evaluate using the unit circle:
Now, remember that tangent is sine over cosine. So: "
We already know them. Substitute:
Simplify:
And we're done!
Answer:
1. the number of seconds 2. the number of feet the sub descends
Step-by-step explanation:
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