Since the triangle is isosceles the measure of angle B is also 47.
since you have dropped a perpendicular bisector the measure of angle x is 90. and since the angles must add to 180 you get 47+47+a=180 and a= 86. since y is half this we have y is 43
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Anything raised to exponent 0 equals 1
So
So we get
Answer: 
Step-by-step explanation:
As X is an acute angle, all 6 trigonometric functions with an argument of X are positive.
Using the identity 
,
1/10 and 1/20 are the
two fractions where the least common denominator is 20 but the product of the denominators is not 20
