Question

plz help me friends... I need ur help ,,plz don't spam... it's matrices chapter of class 11​

Answer 1

Step-by-step explanation:

Icos@ = | cos@. 0. |

| 0. cos@|

Bsin@= | 0. sin@ |

| -sin@. 0. |

Icos@ + Bsin@

| cos@+0. 0+sin@ |

| 0-sin@. cos@+0 |

= | cos@. sin@ |

| -sin@. cos@ |

= C

Answer 2

Answer:

For any other doubt ...feel free to ask :)

Hope this helps you :)