2 answers:
60° if im not mistaken. the right angle is 90° and 30°+b is also 90° as 180°-90°=90°. therefore 90°-30°=60°. hope it helped!
Answer:
<u>b = 60°</u>
Step-by-step explanation:
If you look at the side under the 30° angle, there's a small red box, signifying a right (90°) angle. Doing the math, then, you would do:
90 = 30 + b
b = 60
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