uming its a right triangle ... csc = 1 / sin meaning sin = 1/ 2.6... having 2 sides u can uses a^2 + b^2 = c^2.. meanind adjacent side = 2.78 and sec = 1/cos and cos = a/h ( 2.78/2.6) meaning 1/(2.78/2.6) will give u the answer it it about .935 ! good luck hope this helps
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