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Mathematics 9 Online
OpenStudy (anonymous):

sin theta=-0.5 how is this solved?

OpenStudy (raden):

sin θ = -0.5 θ = 210 deg or θ = 330 deg

OpenStudy (anonymous):

how did u get 210 and 330 ...still dnt understand

OpenStudy (raden):

210 and 330 are the special degrees in trigono :) just memorize it

OpenStudy (anonymous):

oh so this is something i have to know ...what is the name of it ...of all these formulas called so i can remembe rall of them

OpenStudy (raden):

this link might useful http://www.gradeamathhelp.com/trigonometric-table.html

OpenStudy (anonymous):

k thanks

OpenStudy (raden):

welcome :)

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