Consider the equation \displaystyle \tan^2\theta -\sin^2\theta = \sin^2\theta\tan^2\thetatan ​2
​​ θ−sin
​2
​​ θ=sin
​2
​​ θtan
​2
​​ θ.

a) Which of the basic identities will you use first to simplify the left side?

b) Which is the one step before simplifying to the right side?

∠lno ≅ ∠lnm

∠oln ≅ ∠mln

step-by-step explanation:

given   that triangle lno is congruent to triangle lnm.

we have to fill up the blanks in the given question.

according to above order of congruency   kept in mind we can say that

∠lno ≅ ∠lnm

∠oln ≅ ∠mln

ln ≅ ln due to common in both.

hence, by sas congruency,

the side angle side rule   states that if two sides and the included angle of one triangle are congruent to another triangle, then these two triangles are congruent.

12cm

the answer is d

for this case we have that by definition, the surface area of a cylinder is given by:

where:

r: it is the radius of the cylinder

h: it is the height of the cylinder

we can also rewrite it as:

where:

la: it's the lateral area

ba: area of the base

option a