Question

please help me fast guys don't spam ❎❌❎❌❎❌❎​

Answer 1

Answer:

1 = Sin²O is it ok

Step-by-step explanation:

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Answer 2

Answer:

1st question: 1

2nd question: -1

( i think u want to write cos^2 theta and not -cos^theta, thats why i searched in Google as i solved this question...so i was having doubt in your question)