Math, asked by Anonymous, 11 months ago

Evaluate.......


{\textbf{Subject : Mathematics}}

{\textbf{Chapter : Trigonometric Functions }}


Class 11th.

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Answers

Answered by Anonymous
4

sin390 × cos 120

sin( 360+30) × cos(180-60)

sin30 × - cos60

1/2 × -1/2

-1/4

Answered by Anonymous
5

ஜ۩۞۩ஜ[ welcome to the concept of Trigonometry ]ஜ۩۞۩ஜ

sin 390° × cos 120°

= sin ( 4×90+30)× cos (90+30)

= sin 30×( -sin30)

= -1/4

= -0.25

✨I hope it help you ❤️

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