Math, asked by Anonymous, 10 months ago

show that,cot (210° +A) = tan (-120 -A)

Answers

Answered by Anonymous

2

Step-by-step explanation:

cotx=tan(90-x)

=>cot(210+A)= tan(90-{210+A})

= tan(90-210-A)

= tan(-120-A)

proved.

good luck

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