Question

Which of the following is false?
A) sin ex coseco = 1 B) tano x seco = 1 C) cos Oxseco=1
D) tan ex cot0 =1

Answer 1

Answer:

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so here we go

Step-by-step explanation:

now

1.sin×cosec is always 1 as cosec=1/sin

2.tan×sec

=sin/cos×1/cos

=sin/cos square

3.cos×sec is always 1 as sec=1/cos

4.tan×cot is always 1 as cot=cos/sin

and tan=sin/cos

so our 2nd equation doesn't satisfies given condition ie lhs is not equal to rhs

so hence option b is ryt ie it is the only false statement out of all 4