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**Review of some terms**

**Measure of an Angle**

**Trigonometric Ratios**

**Trigonometric ratios are same for same angle**

**Relation between trigonometric ratios**

**In a `Delta ABC`; right angled at A; If AB=5;AC=12 and BC=13; find sin B;cosC and tanB**

**In a `Delta ABC`; right angled at B; If ` sin A = 3/5`; find `cos A; tan A; sec A and Cosec B.**

**In a `Delta ABC`; right angled at B; If ` sin A = 3/5`; find `cos A; tan A; sec A and Cosec B.**

**In a `Delta ABC`; right angled at B; If ` sin A = 3/5`; find `cos A; tan A; sec A and Cosec B.**

**Trigonometric ratios of `0^@ and 90^@`**