Math, asked by ishansrivastava5, 1 year ago

cos+sin =1 prove that cos -sin= +-1

Answers

Answered by Nabhpreet

Answer:

Step-by-step explanation:

ishansrivastava5: ???

abhiroopreddy: (cos+sin)^2 + (cos-sin)^2 = 1+ (cos-sin)^2

abhiroopreddy: If u solve the above equation you will get the following - (cos-sin)^2 =2-1

abhiroopreddy: cos-sin=+-√1=+-1

ishansrivastava5: not understand

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