1 answer:
Step-by-step explanation:
:
2-csc²A
▬▬▬▬▬▬▬
csc²A + 2cotgA
2 - 1/sin²A
= ▬▬▬▬▬▬▬▬▬▬
1/sin²A + 2cosA/sinA
2sin²A - 1
= ▬▬▬▬▬▬▬
1 - 2cosAsinA
sin²A + sin²A - 1
= ▬▬▬▬▬▬▬▬▬▬▬▬
sin²A - 2cosAsinA + cos²A
sin²A - cos²A
= ▬▬▬▬▬▬▬
(sinA - cosA)²
(sinA - cosA)(cosA + sinA)
= ▬▬▬▬▬▬▬▬▬▬▬▬
(sinA - cosA)²
sinA + cosA
= ▬▬▬▬▬▬ <-- Let check "+" and "-"
sinA - cosA
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You list the step by step and you're done.
Do you have an example??
Answer:
Step-by-step explanation:
diez mil treinta y dos
Answer:
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