Answer:
1.A matrix is a rectangular array of numbers, symbols, or expressions, arranged in rows and columns.
2.
Solution given:
We have
Sin²-Cos ²=1
Sin²=1+Cos²
Sin=
3.
4Tan²+4Cot²-3Tan²-3Cot²
4Tan²-3Tan²+4Cot²-3Cot²
Tan²-Cot²
1. 0.75
2. 0.54
3. 0.1875
4. 0.25
5. 016
Answer:
0.61
Step-by-step explanation:
Answer:
x=55
Step-by-step explanation:
Since the two lines are parallel the two angles are same side exterior. This means their sum is 180. So to solve put them equal to 180, x+9+2x+6=180.
First, combine like terms
3x+15=180
Then, subtract 15 from both sides
3x=165
Finally, divide the entire equation by 3
x=55