Question

Which expression is equivalent to tan(-x) cos2x? A. -sin xcos x. B. sin xcos x. C. tan x + sin2x. D. tan x − sin2x. E. -tan x − sin2x.

Answer 1

The equivalent of tan (-x) cos 2x among the choices can be determined by substituting a value of x. For example, x is equal to 1.The value of tan (-1) cos (2*1) is 0.6481. we substitute 1 to each of the choices. The trigonometric terms with the same answer is D. tan (-1) cos (2*1) is also 0.6481. Answer is D.

Answer 2

The expression that is equivalent to tan(-x)cos2x is tan x − sin2x. The correct answer between all the choices given is the fourth choice or letter D. I am hoping that this answer has satisfied your query about this specific question.