Math, asked by subha871, 1 year ago

please answer it guys its urgent

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Answers

Answered by Anonymous

1

Answer:

2

Step-by-step explanation:

(1+cos A)(1-cos A)=3/4

1-cos²A=3/4

sin²A=3/4

sin A=√3/2

A=60°

thus,

sec 60°=2

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