Question:
how to find value of cosec 225
Answer:
cosec 225 = 1/sin225 (Since cosecθ = 1/sinθ)
= 1/sin(180+45)
= -1/sin45
= -1/(1/√2) (Since sin45 = 1/√2)
= - √2
=> cosec 225 = - √2
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