f sin A = 1/2 and cos B = 1/2, then A + B = ? *
60
30
90
0
Answers
Answered by
1
Answer:
sinA=
2
1
∵sin30
∘
=
2
1
∴A=30
∘
cosB=
2
1
∵cos45
∘
=
2
1
∴B=45
∘
∴(A+B)=30
∘
+45
∘
=75
∘
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