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vichka [17]
2 years ago
12

Please help me with my work please help me please give me a good answer

Mathematics
1 answer:
Dvinal [7]2 years ago
8 0
3: 8h+24 4: 6h+21 5: 15x+45y 6: 44h+12g
7: 7jk first box 12jm second box. 8: 9ab+13a
Basically you just want to multiply the number outside the parentheses to each number inside them.
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If angle x=55% and angle y=35, calculate the following 1.cos(x+y) ​
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cos(X+Y) = cos(55+35) = cos(90) = 0

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cos(X+Y) = cosXcosY - sinXsinY

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cos(55+35) = cos(55)cos(35) - cos(90-55)cos(90-35)

cos(55+35) = cos(55)cos(35) - cos(35)cos(55)

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