Question

if cos 2A=0.6 then sin cos A​

Answer 1

Answer:

cos A=0.6

$\tt{cos \: A= \frac{6}{10} }$

$\tt{cos \: A= \frac{b}{h} = \frac{3}{5} }$

Now, B=3,H=5

H² = P ² +B²

5 ² =3² +P²

25=9+p ²

P=4

$\tt{Now, sin \: A = \frac{p}{h} = \frac{4}{5} = 0.8}$

$\tt{tan \: A = \frac{p}{b} = \frac{4}{3} = 1 \frac{1}{3} }$

$\tt{csc \: A = \frac{h}{p} = \frac{5}{4} = 1 \frac{1}{4} }$

$\tt{sec \: A= \frac{h}{b} = \frac{5}{3} = 1 \frac{2}{3} }$

$\tt{cot \: A= \frac{b}{p} = \frac{3}{4} = 0.75}$