Trignometric functions, need help p;z! (1 Viewer)

[excellence1]

Simplify

cos( π/2 -X)

tan (π/2 -θ)

(Note: π= pi)

 

[Speed6]

Simplify

cos( π/2 -X)

tan (π/2 -θ)

(Note: π= pi)

Have you learnt or do you know what complementary ratios are?

 

[excellence1]

there is the basic table, but it doesn't mention the one's with divided by two.

 

[InteGrand]

Simplify

cos( π/2 -X)

tan (π/2 -θ)

(Note: π= pi)

 

[excellence1]

yep, but how do i derive those answers?

 

[InteGrand]

yep, but how do i derive those answers?

 

[KingOfActing]

Use cos(a+b) = cos(a)cos(b) - sin(a)sin(b) and sin(a+b) = sin(a)cos(b) + sin(b)cos(a)