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Mathematics 17 Online
OpenStudy (anonymous):

Trig help!

OpenStudy (anonymous):

sec(theta) = 9 Use identities to find the exact values of cos(theta) csc(theta - pi/2) tan^2(theta)

OpenStudy (ribhu):

cos theta = 1/sec theta = 1/9

OpenStudy (anonymous):

oh yeah. you just flip them. thanks!

OpenStudy (ribhu):

cosec theta = 1/sin theta

OpenStudy (ribhu):

cosec (theta -pi/2) = 1 / -sin(pi/2 - theta)

OpenStudy (ribhu):

cosec (theta - pi/2) = - sec theta

OpenStudy (ribhu):

tan^2 theta+ sec^2 theta = 1 tan^2theta = 1- sec^2 theta

OpenStudy (ribhu):

now u just have to feed in the values and solve

OpenStudy (anonymous):

Thanks!

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