Question

If 2 cos(A + B) = 1, and 2 sin(A -B) = 1 then the values of A and B are (1 Point) (a) 15°, 22° (b) 20°, 10° O (c) 45°, 15° 0 (d) 30°, 45°​

Answer 1

(C) 45 °, 15°

Step-by-step explanation:

cos(A+B)=1/2

Therefore A+B = 60 -- 1

sin(A-B)=1/2

Therefore A-B = 30 -- 2

Add 1 & 2

A+B-A+B=30

2B=30

B=15°

Therefore A= 60-15

A=45.

Therefore Answer is C

Answer 2

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Step-by-step explanation:

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