Answer:
i think the answer is -3/4
When (2x-20)+86=0
2x-20=-86
2x=-46
x=-23
10 is the answer................
Answer:
Ф = ![\frac{\pi }{4} ,\frac{5\pi}{4}](https://tex.z-dn.net/?f=%5Cfrac%7B%5Cpi%20%7D%7B4%7D%20%2C%5Cfrac%7B5%5Cpi%7D%7B4%7D)
Step-by-step explanation:
It is a bit difficult to input the work here, so I uploaded an image
- First we can use the trig identities to change sec²(Ф) to tan²(Ф) + 1
- Then we can combine like terms
- Then we can factor this as a polynomial function
- Then we can set each term equal to zero and solve for Ф
- The first term tan(Ф) - 2 = 0 has no solution because tan(Ф) ≠ -2 anywhere
- The second term tan(Ф) - 1 = 0 has two solutions of
and
so these are the solutions to the problem