Use the product-to-sum and sum-to-product identities to prove the stated identity.sin 12? + sin 14? = cot ?(cos 12? - cos 14?)
What will be an ideal response?
sin 12? + sin 14? = 2 sin
cos 
= 2 sin 13? cos ?
= 
(2 sin 13? sin ?)
= 
(-2 sin 13? (-1)sin ?)
= cot ?(-2 sin 
? sin 
?)
= cot ?(cos 12? - cos 14?)
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Use differentiation to determine whether the integral formula is correct.
dx = - 
+ C
A. Yes B. No
Identify the type of surface represented by the given equation.
- 
- 
= 1
A. Hyperboloid of two sheets B. Hyperboloid of one sheet C. Ellipsoid D. Elliptical cone
Find the perimeter of the figure.
A. 33 m B. 38 m C. 41 m D. 37 m
Solve the problem.The ratio of the weight of an object on Earth to an object on Planet X is 3 to 8. If a person weighs 210 pounds on Earth, find his weight on Planet X. Round to the nearest whole number, if necessary.
A. 560 lb B. 9 lb C. 5040 lb D. 79 lb