if root(3) tanA=1, then find the value of sin^2A-cos^A?
Answers
Answered by
2
Answer:
-1/2 is the answer.
Step-by-step explanation:
√3 tanA = 1
tanA = 1/√3
we know that tan30°= 1/√3
tanA = tan 30°
A = 30°
putting value of A=30° in sin²A - cos² A
sin²A - cos²A = sin² 30° - cos²30°
= (1/2)² - (√3/2)²
= 1/4 - 3/4
= (1-3) / 4
= -2/4 = -1/2
Hence, sin²A -cos² A = (-1/2)
Similar questions