(sint+cost)^2= A.) 1 B.) 1+2sint C.) 1+sin2t D.) sin(t^2)+cos(t^2) E.) sin(t^2)+2sintcost+cos(t^2)

asked Oct 12, 2018 101k views

1 vote

(sint+cost)^2=

A.) 1
B.) 1+2sint
C.) 1+sin2t
D.) sin(t^2)+cos(t^2)
E.) sin(t^2)+2sintcost+cos(t^2)

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7 votes

Hello,

$(sin(t)+cos(t))^2=sin^2(t)+cos^2(t)+2sin(t)cos(t)=1+sin(2t)\\$
Answer C.

Ashutosh answered Oct 19, 2018