Answer:
Equation 1 has no solution. Equation 2 does. The correct answer would be D.
Answer:
the codrect answer is 625
ANSWER
The required angle is

EXPLANATION
Let the angle whose sine is

be

Then

We take the inverse sign of both sides to obtain,

We use our scientific calculator to evaluate and obtain,
Answer:
r < 1/3
Step-by-step explanation:
21r<7
Divide each side by 21
21r/21<7/21
r < 1/3
Answer: 1/24 or 0.0416
Step-by-step explanation: