Question

cos^{2} 17 - sin^{2} 73 sove this question.

Answer 1

Step-by-step explanation:

${cos}^{2} 17 - {sin}^{2} 73 \\ \\ = {sin}^{2} (90 - 17) - {sin}^{2} 73 \\ \\ = {sin}^{2} 73 - {sin}^{2} 73 \\ \\ = 0$

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Answer 2

Answer:

Introduce the first question and then answer it.

Step-by-step explanation:

Introduce the first question and then answer it.