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Jagdish Yadav

· started a discussion

· 1 Months ago

Sec(90-(75+theta))=Cosec(75-theta) . (Question: 339057.0 )

Please make the correction and answer is 2sin(theta)

Question:

What is cosec (75° + θ) – sec (15° - θ) equal to ?

Options:
A)

0

B)

1

C)

2 sin θ

D)

2 cos θ

Solution:

Ans: (a)

cosec (75° + θ) – sec (15° – θ)

= cosec (75° + θ) – sec [90°– (75° + θ)]

= cosec (75° + θ) – cosec (75° + θ) = 0

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