Consider the following image to investigate the trigonometric ratios $\sin\theta$sinθ and $\cos\left(90^\circ-\theta\right)$cos(90°−θ)
$\sin\theta$sinθ = $\editable{}$
$\cos\left(90^\circ-\theta\right)$cos(90°−θ) = $\editable{}$
Does $\sin\theta=\cos\left(90^\circ-\theta\right)$sinθ=cos(90°−θ) for all values of $\theta$θ less than 90°?
Yes
No
Consider the following image to investigate the trigonometric ratios $\cos\theta$cosθ and $\sin\left(90^\circ-\theta\right)$sin(90°−θ)
Fill in the blank with the acute angle that makes the statement true.
Complete the blank in the following expression: