Question

pls ans with steps..thank you

Answer 1

${\red {{\bold{ \huge \dag }}\bold {\huge{{\mathcal {\underline{Answer}}}} \dag}}}$

QUESTION NO. 3

$\star \: \: \underline \blue{solution} \blue{ : }$

$\bold{ tan \: a \: + \frac{1}{tan \: a} = 2}$

$\longrightarrow \: {(tan \: a \: + \frac{1}{tan \: a} )}^{2} = {2}^{2}$

$\longrightarrow \: {tan}^{2} a + \frac{1}{ {tan}^{2}a } + 2 \times tan \: a \times \frac{1}{tan \: a} = 4$

$\longrightarrow {\boxed {\mathfrak {{tan}^{2} a + \frac{1}{ {tan}^{2}a } =2}}}$

QUESTION NO. 4

$\star \: \: \underline \blue{solution} \blue{ : }$

$\bold{cos \: a \: = \frac{3}{5} }$

$\longrightarrow \: {cos}^{2} a = { (\frac{3}{5} )}^{2}$

$\longrightarrow \: 1 - {sin}^{2} a = \frac{9}{25}$

$\longrightarrow \: {sin}^{2} a = 1 - \frac{9}{25}$

$\longrightarrow \: {sin}^{2} a = \frac{16}{25}$

$\longrightarrow \: \boxed {\mathfrak{sin} {\mathfrak{a}} = \mathfrak {\frac{4}{5} }}$

$\bold {\bold{\boxed {\boxed{///MARK \: IT \: BRAINLIEST///}}}}$

Answer 2

Answer:

QUESTION NO. 4

Step-by-step explanation: