Math

 *Math*

1.sin0=?       1/cosec0

2.cosec0=?    1/cos0

3.cot0=?      1/tan0

4.triangle in ehich at least one angle is 90=?  )Right triangle(

5. Matrix that contain equal nbr of rows and column=?      (Row matrix)

6. A figure that have two paralell and equal sides are called?     (Parallelogram)

7. Part of circumference of circle????

8.triangle which all sides are equal=?       ( Isosales not comform)

9. Who invents matrix law?????

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