Question

sin ²63 + Sin 2 a7
Cos² 17 + cos² 73​

Answer 1

Step-by-step explanation:

$(i) \: { \sin}^{2} 63 \degree + { \sin}^{2} 27 \degree \\ = \: { \sin}^{2} 63 \degree + { \cos}^{2} (90 - 27)\degree \\ = \: { \sin}^{2} 63 \degree + { \cos}^{2}63\degree \\ = 1 \\ \\ (ii) \: \: { \cos}^{2} 17 \degree + {cos}^{2} 73\degree \\ = { \sin}^{2} (90 - 17)\degree + { \cos}^{2} 73 \degree \\ = { \sin}^{2} 73\degree + { \cos}^{2} 73 \degree \\ = 1 \\ \\ \red{\mathfrak{ \large{\underline{{Hope \: It \: Helps \: You}}}}} \\ \blue{\mathfrak{ \large{\underline{{Mark \: Me \: Brainliest}}}}}$