Question

If sin’ 0+cos ec²0=6, then sin 0+cos eco =
(A) 3/2
(B) 25
(C) 4/2
(D)✓2




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Answer 1

sin²Ф+cosec²Ф=6

as we know that , sinФ=1/cosecФ

sin²Ф+1/sin²Ф=6

(sinФ+1/sinФ)²-2=6

(sinФ+1/sinФ)²=6+2

sinФ+cosecФ=2√2