Question

The range of cos (x + 5). cos (2
(x - 1) is​

Answer 1

Step-by-step explanation:

$\sf The \: range \: of \: cos (x + 5). cos (2</p><p>(x - 1) is \\ \\ \sf \: cos (x + 5). cos (2</p><p>(x - 1) \\ \\ \sf \: cos (x + 5). cos</p><p>(2x - 2) \\ \\ \sf \: { \sf \: \cos}^{2} ( {2x}^{2} - 2x + 10x - 10 ) \\ \\ \sf \: {cos}^{2} ( {2x}^{2} + 8x - 10) \\ \\ \sf \: {cos}^{2} ( {2x}^{2} + 10x - 2x - 10) \\ \\ \sf \: {cos}^{2} (2x(x + 5) - 2(x + 5)) \\ \\ \sf \red{{cos}^{2} ((2x - 2) (x + 5))}$

Answer 2

Answer:

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