Math, asked by dusaneraj15, 10 months ago

Solve this trignomerty problem plz

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Answered by RvChaudharY50

12

Answer:

sin(270+a) = -cosa

cos(180+a) = -cosa

cos(270-a) = -sina

sin(180+a) = -sina

using all values we get,

cos²a+sin²a = 1 (Proved)

(Mark as brainlist)

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