Answer:
First Quadrant
Step-by-step explanation:
Quadrant I : <u>sin</u>, cos, tan, cot, <u>sec</u>, cosec
Quadrant II : sin, cosec
Quadrant III : tan, cot
Quadrant IV : cos , sec
3z
2
20
2x - 5 = x + 15
2x - x = 5 + 15
x = 20