Question

if cottheta + cosectheta =5 then costheta =​

Answer 1

Step-by-step explanation:

costheta = 5 -cosectheta

Answer 2

Answer:

∅=theta

Cot∅+Cos ec∅=3/2.............(i)

Multiply both sides by Cos ec∅-Cot∅

Then,

Cos ec²∅-Cot²∅=3/2(Cos ec∅-Cot∅)

Since

Cos ec²∅-Cot²∅=1

Hence,

Cos ec∅-Cot∅=2/3.............(ii)

Add (i)+(ii)

2 Cos  ec∅=3/2+2/3= 13/6

Cos ec∅=13/12

Sin∅=12/13

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