Question

Find the value of sin 0° sin 30° - cos 90° cos 30°​

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

sin(90+30) is in the form of sin (A+B)

sin(A+B)= sinA cosB+CosA sinB

sin(90+30)=sin90 cos30 + cos90 sin30

sin90°=1,cos90°=0,sin30°=1/2 and cos30°= √3/2

sin(90+30)= 1×√3/2+0

sin(90+30)= √3/2

cos (30) =√3/2

sin(90+30)=cos(30)

Step-by-step explanation:

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