The answer is 7, your welcome if this helped!
Letter B. X is a vertical angle, and so is F. Vertical angles are all congruent.
The answer is b, I’m not quite sure
Answer:




Step-by-step explanation:
Given


Required
Select Yes or No for the given options

Considering the sine of angle B, we have:


Make AB, the subject


Considering the cosine of angle B, we have:


Make AB the subject


Considering the cosine of angle B, we have:


Make AB the subject


<em>This has been shown in (c) above</em>
The ONLY multiple of 11 that's between 70 and 80 is 77 .