Question

A 12 ft ladder is leaning against a wall with an angle of elevation of 31.2 degrees. How high up the wall will the ladder reach? Round to the nearest tenth and show work..

Answer 1

12/sin90'=b/sin67'

12sin67'=bsin90'

b=12sin67/sin90'

Explanation:

sister ,we can use the law of sines. since we have the angle of elevation and assume the wall makes a right angle with the ground, our angle opposite the ground is 180-[90+23=67

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