Practicing Success
Practicing Success
CUET Preparation Today
If tan θ + sin θ = A and tan θ - sin θ = B, then what is the value of $A^2 - B^2$ ? |
tan θ sin θ 4 cot θ 4 tan θ sin θ 2 tan θ sin θ |
4 tan θ sin θ |
A² - B² = ( tan θ + sin θ )² - ( tan θ - sin θ )² = tan² θ + sin² θ + 2 tan θ . sin θ - tan² θ - sin² θ + 2 tan θ . sin θ = 4 tan θ . sin θ |
