Question

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Answer 1

Step-by-step explanation:

PLEASE FIND THE ATTACHMENT.

HOPE THIS HELPS U

Answer 2

Answer:

$\huge\underline{ \underline{ \red{your \: \: answer}}}$

Step-by-step explanation:

$\sf\red{cos60 \degree = {cos}^{2}30\degree - {sin}^{2}30\degree } \\ \\ \sf\pink{cos60 \degree = \frac{1}{2} } \\ \\ \sf\pink{sin30 \degree = \frac{1}{2} } \\ \\ \sf\pink{cos30 \degree = \frac{ \sqrt{3} }{2} } \\ \\ \sf\pink{R.H.S = \: {cos}^{2}30 \: \degree - {sin}^{2}30 \degree } \\ \\ \sf\pink{ = = > ({ \frac{ \sqrt{3} }{2}) }^{2} - ({ \frac{1}{2} )}^{2} } \\ \\ \sf\pink{ = = > \frac{3}{4} - \frac{1}{4} } \\ \\ \sf\pink{ = = > \frac{3 - 1}{4} } \\ \\ \sf\pink{ = = > \frac{2}{4} } \\ \\ \sf\pink{ = = > \frac{1}{2} }\\\\\sf\purple{==>cos^2\:60°} \\ \\ \sf\pink{ \underline{L.H.S }}$

$\large\boxed{ \fcolorbox{green}{yellow}{hope \: it \: help \: you}}$