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Need ! give step by step solutions on how to solve number one \frac{9-2\sqrt{3} }{12+\sqrt{3} } number two x+4=\sqrt{13x-20} number three (domain and range) f(x)=2\sqrt[3]{x} +1

In triangle opq right angled at p op=7cm,oq-pq=1 determine the values of sinq and cosq

See attachment below and find the equivalent of tan(∠qsr)