What is expand-2cos(0.5(x-7.3)) ?

The solution to expand-2cos(0.5(x-7.3)) is -2(-0.87352…cos(0.5x)-0.48678…sin(0.5x))

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expand-2cos(0.5(x-7.3))

expand

- 2 cos (0.5 (x - 7.3))

- 2 (- 0.87352 \dots cos (0.5 x) - 0.48678 \dots sin (0.5 x))

Solution steps

- 2 cos (0.5 (x - 7.3))

Expand

0.5 (x - 7.3) : 0.5 x - 3.65

= - 2 cos (0.5 x - 3.65)

Rewrite using trig identities

= - 2 (- 0.87352 \dots cos (0.5 x) - 0.48678 \dots sin (0.5 x))

\frac{g ( 4 x + 1 )}{f ( 3 x ^{2} )}

\frac{3 x ^{2}}{( 3 x ^{3} - 2 ) ^{3}}

(10 + 6.22 i) \cdot (10 + 9, 99 i)

\frac{n ( n - 1 )}{2}!

\frac{1}{( s + 2 ) ^{2} ( s - 2 )}

What is expand-2cos(0.5(x-7.3)) ?
The solution to expand-2cos(0.5(x-7.3)) is -2(-0.87352…cos(0.5x)-0.48678…sin(0.5x))