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
Answer:
Pr/ok
Step-by-step explanation:
<1, 1, 1> × <1, 0, 1> = <1, 0, -1>
The cross product of the normals of the planes gives the direction vector of their line of intersection.
The answer is 177.57 please mark me as brainliest since I'm first to answer, thanks,~Kashout kam