Physics, asked by himanshurana8529, 1 year ago

why sinA gets negative in 3rd and 4th quadrant?Prove

Answers

Answered by Garv08

let make an triangle in 3rd quadrant... to find SinA we need Perpendicular/Base

and in 3rd quadrant the Perpendicular will always be of Negative value...

therefore SinA always comes negative in 3rd quadrant

same rule applied in 4th quadrant...hence proved

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Attachments:

Garv08: because in third and fourth quadrant y-axis negative side is said to be perpendicular as the x-axis is base..

Garv08: pic m PS and QR perpendicular h..aur unki length vahi lenge jha tk vo y-axis k parallel h...

Garv08: have to understood it or need more clarification... kindly tell me

Answered by rajputkiyaari

Hey mate here is the correct answer......

It will be solved by ASTC rule .....

I hope it will be helpful to you....

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