Question

Please give step by step explanation​

Answer 1

Answer:

tanQ=P/B=4/3

${h}^{2} = {p}^{2} + {b}^{2} \\ {h}^{2} = {4}^{2} + {3}^{2} \\ = 25 \\ h = 5 \\ then \: sina = \frac{p}{h} = \frac{4}{5} \\ cosa = \frac{b}{h} = \frac{3}{5} \\ therefore \: sina + cosa = \frac{4}{5} + \frac{3}{5} \\ = \frac{4 + 3}{5} = \frac{7}{5}$

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