Sin x = cos (90-x)
eg sin 42 = cos(90-42) = cos 48
so the answer is B
-4x < 20 / ÷ (-4) < 0 ;
x > - 5;
The correct answer is B.
Divide the top one from the bottom one
Answer:
x²+3x+2
Step-by-step explanation:
First you distribute the x, and then the 2.
x²+x+2x+2=x²+3x+2