Answer:
(1)
(2)
Step-by-step explanation:
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Using Pythagoras theorem

<u>Question 1</u>
Now, cosecant = 1/sin
Therefore:

<u>Question 2</u>
Now, secant = 1/cos
Therefore:

Answer:
x = 2.25 (Approximately)
Step-by-step explanation:
4 + 3x^4 = 81
4 - 4 + 3x^4 = 81 - 4
3x^4 = 77
(3x^4)/3 = 77/3
x^4 = 25.67 (Approximately)
x = 2.25 (Approximately)
The 2nd and 4th expressions are the appropriate ones. Both result in '0' which means that Kiana is on the ground floor of the building at the end.