Question

if cosec theta=1/√2 find value of 2-sin^2theta-cos ^2 theta​

Answer 1

Answer:

cosec theta = 1/√2

sin^2 theta = 1/ cosec^2 theta

= 1/(1/2)

= 2

sin^2 theta + cos^2 theta = 1

therefore,

2+ cos^2 theta = 1

cos^2 theta = -1

cos theta = -1

therefore,

2-2-(-1)

=1

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