Question

(cot 30/sec 30) + (cosec 30/tan 45) - (2cos 0/sin 30) + cos^245. Pls its urgent

Answer 1

Answer:

(cot 30/sec 30) + (cosec 30/tan 45) - (2cos 0/sin 30) + cos^245.

= (√3/ 2/√3) + (2/1) - (2*1/ 1/2) + (1/√2)2

= 3/2 + 2 - 4 + 1/2

= (3/2 + 1/2) - 2

= (4/2) - 2

= 2 - 2

=0

Answer 2

HEY MATE YOUR ANSWER IS HERE....

★SOLUTION ( BY USING TRIGNOMATRIC VALUES)★

★ VALUES TO BE USED ★ :-

$\cot(30) = \sqrt{3 } \\ \\ \sec(30) = \frac{2}{ \sqrt{3} } \\ \\ \cosec(30) = 2 \\ \\ \tan(45 ) = 1 \\ \\ \cos(0) = 1 \\ \\ \sin(30) = \frac{1}{2} \\ \\ \cos(45) = \frac{1}{ \sqrt{2} }$

★ ANSWER ★

$\frac{ \cot(30) }{ \sec(30) } \: + \ \frac{\cosec(30) }{ \tan(45) } \: \: - \: \frac{2 \cos(0) }{ \sin(30) } \: + { \cos }^{2} (45)$

$(\frac{ \sqrt{3} }{ \frac{2}{ \sqrt{3} } } ) \: + \: (\frac{2}{1}) \: - ( \frac{2}{ \frac{1}{2} } ) + ({ \frac{1}{ \sqrt{2} } })^{2}$

$\frac{3}{2} \: + 2 \: - 4 \: + \frac{1}{2}$

$\frac{3}{2} + \frac{1}{2} - 4 \: + 2$

$\frac{4}{2} \: - 2$

$2 - 2$

$= 0$

THANKS FOR UR QUESTION HOPE IT HELPS..

★ KEEP SMILING ☺️✌️ ★