2 Answers

Rhisiart · Answer 1 · 2017-12-16T15:23:45+0000

To solve this question, first find the value of theta.

Sin(theta) = 0.3
Theta = sin^-1(0.3)
Theta = 17. 457 degrees.

Pi = 180 degrees.

Sin(17.457+180) = sin(197.457) = -0.3.

Adjan · Answer 2 · 2017-12-19T03:34:16+0000

Additional formula:
sin ( theta + π ) = sin(theta) · cos π + cos (theta ) · sin π =
= 0.3 · ( - 1 ) + cos ( theta ) · 0 = - 0.3

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