Question

please help in this sum asap​

Answer 1

Question 1:

$\cos {}^{2} (45) + \sin {}^{2} (60) + \sin {}^{2} (30)$

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

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

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

$\frac{7}{4}$

Question 2:

$\frac{ \sin(30) - \sin(90) + 2 \cos(0) }{ \tan(30) \times tan(60) }$

$\frac{ \frac{1}{2} - 1 + 2}{ \frac{1}{ \sqrt{3} } \times \sqrt{3} }$

$\frac{1}{2} - 1 + 2$

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

$\frac{3}{2}$

Question 3:

$\sqrt{ \frac{1 - cos {}^{2}30 }{1 - sin {}^{2}30 } }$

$\frac{sin {}^{2}30 }{cos {}^{2} 30}$

$tan {}^{2} 30$

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

$\frac{1}{3}$

Hope this helps!

Answer 2

Answer:

put values of that functions then evaluate you get answer