Sin (A+B)=^3/2,cos(A,B)=^3/2 0°<90° dind the angles A and B
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Answered by
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Answer:
Step-by-step explanation:
Given:-
Sin(A+B)=√3/2
Sin(A-B)=√3/2,0<A,B<90°
To find:-
Find the angles A and B
Solution:-
Sin(A+B)=√3/2
=>Sin(A+B)=Sin60°
A+B=60°--------(1)
Cos(A-B)=√3/2
Cos(A-B)=Cos 30°
A-B=30°--------(2)
From (1)&(2)
A+B=60°
A-B=30°
(+)________
2A+0=90°
__________
=>2A=90°
=>A=90°/2=45°
Therefore, A=45°
From(1)
45°+B=60°
=>B=60°-45°
=>B=15°
Answer:-
The values of A=45° and B=15°
Check:-
Sin(A+B)
=>Sin(45°+15°)
=>Sin60°
=>√3/2
Cos(A-B)
=>Cos(45°-15°)
=>Cos30°
=>√3/2
Verified the given relations
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