Math, asked by karthik7630, 1 month ago

The value of cos 480*sin 150+sin 600*cos 390=​

Answers

Answered by Amannamdev28
0

Step-by-step explanation:

cos (450+30) * sin ( 180-30) + sin (630-30) * cos ( 360+30)

= -sin 30*sin 30 + (-cos 30) * cos 30

= -sin²30 - cos²30

= -(sin²30 + cos ²30)

= -1

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