Question

3. If 2 Cos (A-B) = 2Sin (A+B) =V3. Find the value of A+B.​

Answer 1

Step-by-step explanation:

ANSWER

2cos(A−B)=2sin(A+B)=

3

:

cos(A−B)=

2

3

or sin(A+B)=

2

3

cos(A−B)=cos30 or sin(A+B)=sin60

A−B=30 or A+B=60

Add the two equations:

2A=90

A=45

∘

Also, A−B=30

45−B=30

B=15

∘

Answer 2

Answer:

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