7√2 * синус 15 пи ** 8* косинус 15 пи ** 8

Question

7√2 * синус 15 пи на 8* косинус 15 пи на 8

Answer 1

7√2 sin15П/8 ·cos15П/8 =2·3,5√2·sin15П/8 ·cos15П/8=3,5√2sinП/4=3,5√2·√2/2=3,5

Answer 2

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