Question

From the adjoining figure find the values of the following:
(a) sinθ
(b) cos φ
(c) sec θ +cosecϕ





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Answer 1

AC=√(√21²+2²)=5

cosphi=2/5

AB=√(5²-4²)=3

sin theta=3/5

sec theta=5/2

cosec phi =5/√21

sectheta+cosecphi=5/2+5/√21=5√21+10/2√21