Use trigonometric identities to find the exact value.sin 20° cos 40° + cos 20° sin 40°
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Simplify completely.- 
A. 
B. 
C. - 
D. - 
Mathematics
Two forces F1 and F2 with magnitudes 8 lb and 12 lb act on an object at a point P as shown in the figure. Find the magnitude of the resultant force F acting at P. Round the result to the nearest tenth.
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Mathematics
Divide and simplify.
÷ 
A. 
B. 
C. 
D. 7
Mathematics
Provide an appropriate response.The price of an item is reduced by 20% in a sale. Two weeks later the price is increased to 20% more than the sale price. Do you think that the item has been restored to its original price? If not, do you think its price is now higher or lower than the original price? Explain your thinking.
What will be an ideal response?
Mathematics