can anyone solve it plzzzz

Answer:
1.A matrix is a rectangular array of numbers, symbols, or expressions, arranged in rows and columns.
2.
Solution given:
We have
Sin²[tex]\theta[/tex]-Cos ²[tex]\theta[/tex]=1
Sin²[tex]\theta[/tex]=1+Cos²[tex]\theta[/tex]
Sin[tex]\theta[/tex]=[tex]\sqrt{1-Cos²\theta}[/tex]
3.
4Tan²[tex]\theta[/tex]+4Cot²[tex]\theta[/tex]-3Tan²[tex]\theta[/tex]-3Cot²[tex]\theta[/tex]
4Tan²[tex]\theta[/tex]-3Tan²[tex]\theta[/tex]+4Cot²[tex]\theta[/tex]-3Cot²[tex]\theta[/tex]
Tan²[tex]\theta[/tex]-Cot²[tex]\theta[/tex]