Question

50 points for the first and absolutely correct answers .
answer both the questions .
no irrelevant answer plz .​

Answer 1

Answer:

Please go through the above attachment!!!

Please go through the above attachment!!!Hope it helps you

Please go through the above attachment!!!Hope it helps youPlease follow me and Mark me the brainiest Xd.....

Answer 2

Answer:

Explanation:

12. We know that angle c is 90 degree  

Using angle sum property we will get

Angle a +angle b =90  

Therefore sec (A+B)=sec (90)

Amd the value of sec 90 is not defined

13.  Sin theta-cos theta=0

Sin theta=Cos theta=45°

Sin ^4 theta + cos^ 4 theta

$\frac{1}{(\sqrt{2)^4} } +\frac{1}{(\sqrt{2)^4} }$

= $\frac{1}{4} +\frac{1}{4}$

=$\frac{1}{2}$