Answer:
lol number 8 is x= i, -i , 
, -4 so u are correct.
and number 7 is x=
or ![\sqrt[5-i]\sqr\frac{23}{8}](https://tex.z-dn.net/?f=%5Csqrt%5B5-i%5D%5Csqr%5Cfrac%7B23%7D%7B8%7D)
Step-by-step explanation:
The measure of arc EF = 146 degrees because its central angle = 146 degrees.
Answer:b
Step-by-step explanation:
If tan theta is -1, we know immediately that theta is in either Quadrant II or Q IV. We need to focus on Q IV due to the restrictions on theta.
Because tan theta is -1, the ray representing theta makes a 45 degree angle with the horiz axis, and a 45 degree angle with the negative vert. axis. Thus the hypotenuse, by the Pythagorean Theorem, tells us that the hyp is sqrt(2).
Thus, the cosine of theta is adj / hyp, or +1 / sqrt(2), or [sqrt(2)]/2
The secant of theta is the reciprocal of that, and thus is
2 sqrt(2)
---------- * ------------ = sqrt(2) (answer)
sqrt(2) sqrt(2)
