Answer:
Step-by-step explanation:
2 csc²x-2 csc x-1=0
or

Sam will be = 15 - 3 = 12 years.
USING PYTHAGORAS THEORAM,
x²+3²= 5²
x²+9= 25
x²= 25-9 = 16
x= √16
x= 4
OPTION D
The answer is 540 because 32/48 is 2/3 and 360/540 equals 2/3
The answer is A since -12 is added on both sides. And when adding with negatives you ALWAYS take the sign of the bigger number :)