If 2 theta+45 degree and 30 degree minus theta are acute angles, find the degree measure of theta satisfying sin (2 theta plus 45 degree)= cos (30 degree minus theta)
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67
I think 15degrees is the correct answer
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Answer: 15 degree
Step-by-step explanation:
Sin (2 theta + 45) = cos ( 30- theta)
Sin (2 theta + 45) = sin [90-(30-theta)]
=> 2 theta + 45 = 60 - theta
=> 2 theta - theta = 60 -45
Theta = 15
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