Home » In (sin(X+30)^o=cos40^o),find X

In (sin(X+30)^o=cos40^o),find X

In (sin(X+30)^o=cos40^o),find X
  • A.
    10o
  • B.
    20o
  • C.
    50o
  • D.
    60o
  • E.
    90o
Correct Answer: Option B
Explanation

(sin(X+30)^o=cos40^o\
X+30+40=90^o)complementary angles
(X=20^o)

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