терема синусов в помощь))
a) 6√2/sinC =x/sinA
x=6√2*sinA /sinC = 6√2 * (1/2)/( √2/2)= 6√2 * (1/2)*( 2/√2) = 6
b) 8√3 /sinA =x/sinC
x=8√3*sinC/ sinA =8√3*(√2/2) /(√3/2) = 8√3*(√2/2) *(2/√3) =8√2
c) ∠B=180°-(30°+105°)=45°
7/sinA =x/sinB
x=7*sinB/sinA = 7*(√2/2)/(1/2) = 7*(√2/2)*(2/1)= 7√2
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терема синусов в помощь))
a) 6√2/sinC =x/sinA
x=6√2*sinA /sinC = 6√2 * (1/2)/( √2/2)= 6√2 * (1/2)*( 2/√2) = 6
b) 8√3 /sinA =x/sinC
x=8√3*sinC/ sinA =8√3*(√2/2) /(√3/2) = 8√3*(√2/2) *(2/√3) =8√2
c) ∠B=180°-(30°+105°)=45°
7/sinA =x/sinB
x=7*sinB/sinA = 7*(√2/2)/(1/2) = 7*(√2/2)*(2/1)= 7√2