If cos (A+35) = 1/2, find A.
Answers
Answered by
1
Answer:
25 degrees
Step-by-step explanation:
sin 30 is 1/2 (because in a 30, 60, 90 triangle, the opposite side of the angle 30 divided by the hypotenuse is always 1/2), so cos(90-30) has to equal the same as sin 30. 90-30 is 60, and 60-35 is 25 degrees.
Answered by
2
Answer:
Cos(A +35) = 1/2
cos ( A+35 ) = cos45
A + 35= 45
A = 45-35
A = 10.
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