Question

If Sec (A/3)= 1, then value of A is

Answer 1

Answer:

Solution

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Given (1+cosA)(1−cosA)=

4

3

⟹1−cos

2

A=

4

3

⟹cos

2

A=1−

4

3

⟹cos

2

A=

4

4−3

⟹cos

2

A=

4

1

⟹sec

2

A=4

⟹secA=±2

Answer 2

Answer:

3 is the answer

Step-by-step explanation:

3/3=1

hope it's helpful