Question

trigonometric ratios prove the following
1)1/1+cos A+1/1-cos A=2(cosec)sq A
2)sec A-1/sec A+1=1- cos A/1+cos A

Answer 1

Answer:

Step-by-step explanation:

1/1+cos+1/1-cos

Taking lcm

1-cos+1+cos/(1+cos)(1-cos)

2/1-cos^2

2/sin^2

2cosec^2......hence proved

2.putting up value of sec we get

1/cos-1/1/cos+1

Taking lcm of up n down

1-cos/cos/1+cos/cos

1-cos/cos*cos/1+cos

1-cos/1+cos.... hence proved

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Answer 2

Answer:

Step-by-step explanation:

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