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Popular >

1+2cos(30)

Solution

1 + 2 cos (3 0^{\circ})

Solution

1 + 3

+1

Solution steps

1 + 2 cos (3 0^{\circ})

Use the following trivial identity:

cos (3 0^{\circ}) = \frac{3}{2}

= 1 + 2 \cdot \frac{3}{2}

Simplify

1 + 2 \cdot \frac{3}{2} : 1 + 3

= 1 + 3

Popular Examples

arccos (\frac{33}{65})

sqrt(25.1)sin(0.8)

25.1 sin (0.8)

1 + cos^{2} (0)

sqrt(3)(cos(pi/6)+i, pi/6)

3 (cos (\frac{π}{6}) + i, \frac{π}{6})

arcsin((309.4*sin(42.31))/(238.99))

arcsin (\frac{309.4 \cdot sin ( 42.3 1 ^{\circ} )}{238.99})

Frequently Asked Questions (FAQ)

What is the value of 1+2cos(30) ?
The value of 1+2cos(30) is 1+sqrt(3)