What is simplify-sin(2x)sin(x)+cos(2x)cos(x) ?

The solution to simplify-sin(2x)sin(x)+cos(2x)cos(x) is cos(2x+x)

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simplify-sin(2x)sin(x)+cos(2x)cos(x)

simplify

- sin (2 x) sin (x) + cos (2 x) cos (x)

cos (2 x + x)

Solution steps

- sin (2 x) sin (x) + cos (2 x) cos (x)

Use the Angle Sum identity:

cos (s) cos (t) - sin (s) sin (t) = cos (s + t)

= cos (2 x + x)

r (36 \cdot 3.14)

2.7 a^{2} - a - p^{2} + p^{2}

\frac{1}{2} + \frac{4}{1} + \frac{4}{3} \times \frac{7}{9}

- 3 x^{2} - 1 x - 8

(7 x + 1) (4 x - 8) 2 x^{2}

What is simplify-sin(2x)sin(x)+cos(2x)cos(x) ?
The solution to simplify-sin(2x)sin(x)+cos(2x)cos(x) is cos(2x+x)