Mathematics 10 — Exercise 7.1 · Q2 (iv)
Full question
Insert the correct algebraic sign, + or −, in the following trigonometric identity: cos(90°+θ)= … sin θ
Step-by-step solution
The cofunction is sine, with a negative sign in quadrant II.
Answer
−
Insert the correct algebraic sign, + or −, in the following trigonometric identity: cos(90°+θ)= … sin θ
The cofunction is sine, with a negative sign in quadrant II.
−