Question

1 - costhetha/sinthetha = sinthetha/1+costhetha
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Answer 1

Answer:

Step-by-step explanation:

Devide and Multiply by 1+cosx

(1+cosx)(1-cosx)/(1+cosx)(sinx)

(1²-cos²x)/(1+cosx)(sinx)

(Sin²x)/(1+cosx)(sinx) ( because sin²x+cos²x=1)

Sinx/1+cosx

Hope it helps you dude!!!!