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![\theta](https://tex.z-dn.net/?f=%5Ctheta)
Sin
=![\sqrt{1-Cos²\theta}](https://tex.z-dn.net/?f=%5Csqrt%7B1-Cos%C2%B2%5Ctheta%7D)
3.
4Tan²
+4Cot²
-3Tan²
-3Cot²![\theta](https://tex.z-dn.net/?f=%5Ctheta)
4Tan²
-3Tan²
+4Cot²
-3Cot²![\theta](https://tex.z-dn.net/?f=%5Ctheta)
Tan²
-Cot²![\theta](https://tex.z-dn.net/?f=%5Ctheta)
The less coefficient in front of x^2, the wider graph
the smallest coefficient is 1/5 , so the widest graph is y=(1/5)x²
Omg I’m stuck on a question like that and I made another account and posted it there and nobody is answer me
A:b = 8:5 b:c = 3:4
since both sides have b. make b the same. multiply the left by the right side b value of 3 and multiply the right by the left side b value of 5.
3(a:b) and 5(b:c)
3 (8:5) and 5(3:4)
24:15 15:20
now that both sides have the same b value
a:b:c = 24:15:20
The answer is 550 because you would be dividing