Sum
If A = 30°;
show that:
`(1 – cos 2"A")/(sin 2"A") = tan"A"`
Advertisement Remove all ads
Solution
Given that A = 30°
LHS = `(1 – cos2 "A")/(sin 2"A")`
= `(1 – cos 2 (30°))/(sin2 (30°))`
= `(1 – (1)/(2))/((sqrt3)/(2)`
= `(1)/(sqrt3)`
RHS = tan A
= tan 30°
= `(1)/(sqrt3)`
LHS = RHS
Concept: Trigonometric Ratios of Some Special Angles
Is there an error in this question or solution?
APPEARS IN
Advertisement Remove all ads
