Il Sin (
AplusB) = 1=cos(A-B)
(a) A= B = 90°
(b) A = B = 0°
(C) A =B 45°
(D) A = 2B
Answers
Answered by
0
Step-by-step explanation:
We have,
csc(90
0
−θ)=secθ and sin(90
0
−θ)=cosθ
csc54
0
=csc(90
0
−36
0
)=sec36
0
sin72
0
=sin(90
0
−18
0
)=cos18
0
∴csc54
0
+sin72
0
=sec36
0
+cos18
0
Answered by
1
Answer:
I think the answer is a) A= B= 90°.
Step-by-step explanation:
Hope it will help you.
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