Question

(2) Asin^2 0 + 4cos2 0 = ...
(A) -4
(B) 3
(C) 16
(D) 4

choose the correct alternative.
please look at the attachment.​

Answer 1

4(sin^2 O + cos^2 O)

4(1)

4————>Answer

Answer 2

Answer:

D) 4

Step-by-step explanation:

LHS=

=4sin²θ+4cos²θ

(get 4 common)

=4(sin²θ+cos²θ)

[ using trigonometrical identity (sin²θ+cos²θ=1) ]

=4(1)

=4

=RHS

∴LHS=RHS

∴4sin²θ+4cos²θ=4