Предмет: Алгебра, автор: rewsk

упростите выражение sin² t + cos² t + tg² x​

Ответы

Автор ответа: Аноним
1

( sin² t + cos² t )+ tg² t​=1+tg²t=1/cos²t

использовал основное тригонометрическое тождество, т.е.

sin² t + cos² t =1 и второе тождество 1+tg²t=1/cos²t

надеюсь. что х - это всего лишь опечатка. а если нет. то ответ

1+tg² x​=1/(cos²(x))

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Black or White
When I was at school, I used to argue a lot with my classmates and family members. Once there was a serious argument between my friend Bill and me. I have forgotten what the argument was about, but I have never forgotten the lesson I learned that day.
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The teacher told me to go and stand where Bill was standing and told him to come and stand where I had been. We changed places, and now she asked me what the color of the object was. I had to answer, “White.”
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The boys had two arguments in the story.
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