Option C:
x = 90°
Solution:
Given equation:

<u>To find the degree:</u>

Subtract 1 + cos²x from both sides.

Using the trigonometric identity:




Let sin x = u

Factor the quadratic equation.

u + 2 = 0, u – 1 = 0
u = –2, u = 1
That is sin x = –2, sin x = 1
sin x can't be smaller than –1 for real solutions. So ignore sin x = –2.
sin x = 1
The value of sin is 1 for 90°.
x = 90°.
Option C is the correct answer.
I think this is factorials
so an example would b....... 1*2*3*4*5.... ect
hope this helps
Answer: the volume of a rectangular prisim with lenths (12ft , height 14 ft , and width 17 ft ) is
V=2856ft³
Answer A and Answer D along with the ones you picked beforehand
Answer:
628.32
Step-by-step explanation:
Volume:
πr2h
=π×52×8
= 200π
= 628.31853071796