Asked by Jamie
Find the exact value of the cosine and the cosecant of thetha, if thetha terminates in quadrant II and sin theta = 4/5
Answers
Answered by
Bun
cos^2 + sin^2 =1
cos^2 = 1-16/25 =9/25
sin theta terminates in quadrant II, so sin>0 but cos <0
therefore cos =-3/5
cos^2 = 1-16/25 =9/25
sin theta terminates in quadrant II, so sin>0 but cos <0
therefore cos =-3/5
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