Math, asked by skr7050395535, 1 year ago

Sin780 sin480+cos120 sin150=2/4

Answers

Answered by brunoconti

1

Answer:

Step-by-step explanation:

Attachments:

Answered by santukumar1806

1

Answer:

sin780sin480+cos120sin150=2/4

LHS

sin780sin480+cos120sin150

=sin(90×8+60)sin(90×5+30)+cos(90+30)sin(180-30)

=sin60cos30-sin30sin30

= √3/2×√3/2-1/2×1/2

=3/4-1/4

=3-1/4

=2/4

I hope you understand

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