Math, asked by narsingyadav481, 10 months ago

sec 70. sin 20 - cos 20. cosec 70

Answers

Answered by darkcreativeclouds

1

Step-by-step explanation:

sec 70. sin(90-70) - cos 20. cosec(90-20)

sec 70. cos70 - cos 20 . sec 20

1/cos70. cos70 - cos20 . 1/cos20

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