Evaluate: cos53∘sin37∘sin37 ∘ cos53 ∘
Question
Evaluate: cos53∘sin37∘sin37 ∘ cos53 ∘
Solution
To evaluate the expression cos(53°)sin(37°), we need to remember a fundamental identity of trigonometry, which is cos(90° - θ) = sin(θ).
Here, we can see that 53° and 37° are complementary angles because they add up to 90°. This means we can use the identity to simplify the expression:
cos(53°)sin(37°) = sin(90° - 53°)sin(37°) = sin(37°)sin(37°) = (sin(37°))^2.
So, the expression cos(53°)sin(37°) simplifies to (sin(37°))^2.
Similar Questions
Evaluate: sin48∘−cos42∘sin48 ∘ −cos42 ∘
sin12∘sin24∘sin48∘sin84∘=cos20∘cos40∘cos60∘cos80∘sin20∘sin40∘sin60∘sin80∘315None of these
Evaluate tan 1∘×tan28∘×tan35∘×tan62∘×tan89∘×tan55∘tan 1 ∘ ×tan28 ∘ ×tan35 ∘ ×tan62 ∘ ×tan89 ∘ ×tan55 ∘
What is cos20∘+cos100∘+cos140∘ equal to ?231/20
Convert the following angle from degrees to radians. Express your answer in simplest form.555, degrees555 ∘
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.