Question

Show that (sin theta + cos theta) whole square + (cos theta + secant theta) whole square equals to 7 + tan square theta + cot square theta​

Answer 1

Step-by-step explanation:

(sin theta + cos theta) ^2= 1+2 sin.cos

( cos theta + sec theta) ^2= cos^2 theta+ sec^2 theta + 2

so, 1+2 sin. cos+cos^2 theta+sec^2 theta + 2

=3+sin.cos + cos^4 theta +1/ cos^2 theta

=