Practicing Success
Find the value of $\frac{sin70°}{cos20°}+\frac{tan 46°}{cot 44°}+cos 49°. cosec 41°$ |
3 2 $\frac{1}{2}$ 0 |
3 |
$\frac{sin70°}{cos20°}+\frac{tan 46°}{cot 44°}+cos 49°. cosec 41°$ Concept, Sin Θ = Cos (90 - Θ) Tan Θ = Cot (90 - Θ) and if the sum of the angles is 90o then we can put the angles according to our choice, So, put all of them 45o $\frac{sin45°}{cos45°}+\frac{tan 45°}{cot 45°}+cos 45°. cosec 45°$ = 1 + 1 + 1 = 3 |