The answer to this problem would be 12. If you need to show work just comment.
Hey there :)
- tan²x + sec²x = 1 or 1 + tan²x = sec²x
sin²x + cos²x = 1
Divide the whole by cos²x


so

and

so

Therefore,
tan²x + 1 = sec²x
Take tan²x to the other side {You will have the same answer}
1 = - tan²x = sec²x or sec²x - tanx = 1
Answer:
I would say the last one, bc b Is negative correct?
Answer:
27
Step-by-step explanation:
4p+%2B+2c+=+78
4%2A12+%2B+2%2A15+=+78
48+%2B+30+=+78
78+=+78