Question

If tan θ = 3 sin θ , find the value of sin2 – cos2 �

Answer 1

Answer:

√3 tantheta = 3 sin thetha

√3 sinthetha /costhetha = 3sintheta

√3 sinthEta/ 3sinthetha = costheta

1/√3 = costheta

cos square theta= 1/3

sin squaretheta +cos squaretheta =1

sin squaretheta = 1-1/3 = 2/3

sin square theta - cos square theta

2/3 - 1/3

1/3

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