sin(30)*1.8
You asked:
Evaluate the expression: \(\sin\left( 30 \right) \cdot 1.8\)
MathBot Answer:
\[\sin\left( 30 \right) \cdot 1.8 = \frac{9 \sin{\left(30 \right)}}{5} \approx -1.77845692336715122197794803313002\]
\[\begin{aligned}\sin\left( 30 \right) \cdot 1.8& = \sin{\left(30 \right)} \cdot \left(1 + \frac{8}{10}\right)\\& = \sin{\left(30 \right)} \cdot \left(1 + \frac{4}{5}\right)\\& = \sin{\left(30 \right)} \cdot \frac{9}{5}\\& = \frac{9}{5} \cdot \sin{\left(30 \right)}\end{aligned}\]