Prove the following identity: sin(3x) = 3 cos^2(x) sin(x) - sin^3(x). Prove the following identity \sin(x+y+z)+\sin(x+y-z)+\sin(x-y+z)+ \sin(x-y-z) = 4 \sin(x) \cos(y) \cos(z) Verify the following trigonometric identity: (sin x)/(1 - cos x) ...
解析 So, using the sum identity for the sine, we have sin(+ y=sinxcosy+cosxsiny=1/3⋅4/5+(2√2)/3⋅3/5=(4+6√2)/(15)=1/(15)(4+6) 4+6v2 =- 15 (4+6√2)A = fus =8/(12)=8/(10)=(80)/(100) 9/8=(9E)/(9t)-t↑=Rugv =SO3 ...
cos(2x)−2sin(x)−cos(x)2=−3 Solve for x x=2πn1+2π n1∈Z Graph