Answer:

Step-by-step explanation:
Because
→
is equal to 2
→
is equal to
or 11.18033989
→
is equal to
or 0.7745966692
→
is equal to 3.514256678
√144 √ ( 12×12 )=√ (12)² = 12 ⇒ √144 = (12)²
On the interval [-2π,2π], the x intercepts are:
-5π/4, -π/4, 3π/4, 7π/4