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Popular >

cos^2(21)

Solution

cos^{2} (2 1^{\circ})

Solution

0.87157 \dots

Solution steps

cos^{2} (2 1^{\circ})

Refine to a decimal form

= 0.87157 \dots

Popular Examples

arcsin((4pi)/3)

arcsin (\frac{4 π}{3})

arcsin (0.665)

sin((3pi)/2)+tan(pi)cos(pi/2)-cot((5pi)/6)-sin((7pi)/6)

sin (\frac{3 π}{2}) + tan (π) cos (\frac{π}{2}) - cot (\frac{5 π}{6}) - sin (\frac{7 π}{6})

cos(pi/3)-cos(0)

cos (\frac{π}{3}) - cos (0)

5 sin (5 π)

Frequently Asked Questions (FAQ)

What is the value of cos^2(21) ?
The value of cos^2(21) is 0.87157…