Mathematics 10 — Exercise Review · Q1 (iv)
Full question
sin(90°+θ)=?
| Option | Value |
|---|---|
| a | sinθ |
| b | −sinθ |
| c | cosθ |
| d | −cosθ |
Step-by-step solution
Apply the cofunction identity in quadrant II.
Answer
(c) cosθ
sin(90°+θ)=?
| Option | Value |
|---|---|
| a | sinθ |
| b | −sinθ |
| c | cosθ |
| d | −cosθ |
Apply the cofunction identity in quadrant II.
(c) cosθ