Question

If 2 cos 2A =1 ; find the value of A
90
D 45​

Answer 1

Answer:

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Step-by-step explanation:

√2(1+cos A) =1

√2(2 cos squ A/2) =1

√4 cos squ A/2=1

√2 cos A/2=1

A=1×2/√2 cos

A=2/√2×√2/√2 cos

A= 2√2/2cos

A= 2 (cos) inverse

Here squ means square...

Answer 2

Answer:

Hope it helps u...

Mark me as brainliest...!!!

Step-by-step explanation:

√2(1+cos A) =1

√2(2 cos squ A/2) =1

√4 cos squ A/2=1

√2 cos A/2=1

A=1×2/√2 cos

A=2/√2×√2/√2 cos

A= 2√2/2cos

A= 2 (cos) inverse

Here squ means square...