Which sum or difference identity could be used to prove that cos(270º - thata) = -sin thata is an identity?
cos 270° cos 8 – sin 270° sin e
cos 270° cos 0 + sin 270° sin e
O sin 270° cos
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cos 270° sin e
O sin 270° cos 0 + cos 270° sin 0

what is

step-by-step explanation:

since we know that the two functions are equal, f (x) = g

(x), therefore when we equate the two equations the result should be similar to

3x = x – 4:

a. f(x) = 3x, g(x) = x – 4

equating the two functions:

3x = x – 4             (correct)

so we now got our answer (a)

your answer is c. 97 (don't delete this again)

step-by-step explanation: