Math, asked by kravi230, 2 months ago

(sin theta + cos theta)2 - (sin theta -cos theta)2=​

Answers

Answered by wayne05
0

Answer:

0

Step-by-step explanation:

Question: (sin∅ + cos∅)^{2} -  (sin∅ - cos∅)^{2}

sin^{2}∅ + 2. sin∅. cos∅ + cos^{2}∅ -  sin^{2}∅ - 2. sin∅. cos∅ + cos^{2}

⇒  sin^{2}∅ +  cos^{2}∅ - sin^{2}∅ +  cos^{2}

⇒ 1 - 1

0

∴  (sin∅ + cos∅)^{2} -  (sin∅ - cos∅)^{2} = 0

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