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| 1. |
Sin-cos=0 find sin^4+cos^4 |
| Answer» Sin θ -cos θ =0Sin θ = cos θ Sin θ /Cos θ =1Tan θ =1 θ =45°Now, (sin θ )^4+(cos θ )^4=(sin45°)^4+(cos45°)^4(1/√2)^4+(1/√2)^4=1/4+1/4=2/4=1/2Hence 1/2 is ans.Hope it will help u. | |