Question

verify sin²ø + cos²ø=1 for ø=30°,45°,60°​

Answer 1

Answer:

${ \sin }^{2} \phi + { \cos }^{2} \phi = 1 \\ \blue{\mathfrak{\underline{\large{putting \: \phi = 45°}}}:} \\ { \sin }^{2} 45° + { \cos }^{2} 45°= 1 \\ {( \frac{1}{ \sqrt{2} } )}^{2} + {( \frac{1}{ \sqrt{2} } )}^{2} = 1 \\ \frac{1}{2} + \frac{1}{2} = 1 \\ \frac{2}{2} = 1 \\ 1 = 1 .\:verified\\ L.H.S = R.H.S \\ \\ \red{\mathfrak{ \large{\underline{{Hope \: It \: Helps \: You}}}}} \\ \blue{\mathfrak{ \large{\underline{{Mark \: Me \: Brainliest}}}}}$