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Popular >

cos(C)=(5^2+4.05^2-3^2)/(2(4.055))

Solution

cos (C) = \frac{5 ^{2} + 4.0 5 ^{2} - 3 ^{2}}{2 \cdot ( 4.05 \cdot 5 )}

Solution

C = 0.64339 \dots + 2 πn, C = 2 π - 0.64339 \dots + 2 πn

+1

Solution steps

cos (C) = \frac{5 ^{2} + 4.0 5 ^{2} - 3 ^{2}}{2 ( 4.05 \cdot 5 )}

Simplify

\frac{5 ^{2} + 4.0 5 ^{2} - 3 ^{2}}{2 \cdot 4.05 \cdot 5} : \frac{32.4025}{40.5}

Apply trig inverse properties

C = arccos (\frac{32.4025}{40.5}) + 2 πn, C = 2 π - arccos (\frac{32.4025}{40.5}) + 2 πn

Show solutions in decimal form

C = 0.64339 \dots + 2 πn, C = 2 π - 0.64339 \dots + 2 πn

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Frequently Asked Questions (FAQ)

What is the general solution for cos(C)=(5^2+4.05^2-3^2)/(2*(4.05*5)) ?
The general solution for cos(C)=(5^2+4.05^2-3^2)/(2*(4.05*5)) is C=0.64339…+2pin,C=2pi-0.64339…+2pin