<span>sin A cos B=1/2[sin(A-B)+sin(A+B)]
sin(at)*cos(2at)=1/2[sin(3at)-sin(at)]</span>
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Answer:
117, 55, 54, 77, 130, 7h + 5x, 14
Step-by-step explanation:
For every meter there are 3.281 feet. The perimeter of the yard is 188ft. Divide 188 by 3.281 and you get 57.3 (rounded to 1dp). Round that<em> up</em> to the nearest meter and you get 58. So, Mr Smith needs 58 meters of fencing for his yard.
10+15=25, so when you add 2+3 it equals 5 and when you times 5 by 5 it equals 25.
Letter c because if u multiply 5•3 you get 15