9514 1404 393
Answer:
- -√5
- 3/5
- -4/5
Step-by-step explanation:
The relevant relations are ...
sec = ±√(tan² +1)
cos = 1/sec
csc = 1/sin = ±1/√(1 -cos²)
Sine and Cosecant are positive in quadrants I and II. Cosine and Secant are positive in quadrants I and IV.
__
1. sec(θ) = -√((-2)² +1) = -√5
2. cos(θ) = 1/sec(θ) = 1/(5/3) = 3/5
3. csc(θ) = -1/√(1 -(-3/5)²) = -√(16/25) = -4/5
Answer:
We have 7n < 6 - 48;
7n < - 42;
n < -6;
Then, 3n - 4 ≤ 8;
3n ≤ 12;
n ≤ 4;
Step-by-step explanation:
So,
Simply divide 12 by 18.
The experimental probability of tossing heads was 2 out of 3.
