subject
Mathematics, 20.10.2021 15:00 yvette2003

Rita is proving that the following trigonometric identity is true: cos(−θ)sin(−θ)=−1tanθ Which step would be the first line of her proof? cosθsinθ=−1tanθ cosθ−sinθ=−1tanθ cos(−θ)sinθ=−1tanθ cos(−θ)⋅tanθ=sin(−θ) please answer I have no idea how to do this WILL MARK BRAINLIEST

ansver
Answers: 1

Another question on Mathematics

question
Mathematics, 21.06.2019 17:30
At a sale this week, a desk is being sold for $213. this is a 29% discount from the original price. what is the original price?
Answers: 1
question
Mathematics, 21.06.2019 21:30
The owner of the plant nursery where you were tells you to fill 350 ml bottles from a 30 l from a fertilizer
Answers: 1
question
Mathematics, 21.06.2019 22:30
Whit h equation best represents this situation the number 98 increased by an unknown number equal to 120
Answers: 1
question
Mathematics, 22.06.2019 00:20
Once george got to know adam, they found that they really liked each other. this is an example of what factor in friendship
Answers: 1
You know the right answer?
Rita is proving that the following trigonometric identity is true: cos(−θ)sin(−θ)=−1tanθ Which step...
Questions
question
History, 27.08.2021 23:00
question
English, 27.08.2021 23:00
question
Mathematics, 27.08.2021 23:00
question
Mathematics, 27.08.2021 23:00
question
Mathematics, 27.08.2021 23:00