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Using Sine, Cosine, & Tangent Practice Test

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Q1

The three angles of a right triangle have measures ![](//vt-vtwa-assets.varsitytutors.com/vt-vtwa/uploads/formula_image/image/1182054/gif.latex $"a^{\circ}$"), ![](//vt-vtwa-assets.varsitytutors.com/vt-vtwa/uploads/formula_image/image/1182055/gif.latex $"b^{\circ}$"), and ![](//vt-vtwa-assets.varsitytutors.com/vt-vtwa/uploads/formula_image/image/1182056/gif.latex $"c^{\circ}$"). If and $\cos $a^{\circ}$=$\frac{3}{5}$$ , what is $\sin $b^{\circ}$$ ?

<u>Note: The following question could appear on the With Calculator section, so the student can use a calculator to answer it.</u>

Two acute angles have measures ![](//vt-vtwa-assets.varsitytutors.com/vt-vtwa/uploads/formula_image/image/1182477/gif.latex $"y^{\circ}$") and ![](//vt-vtwa-assets.varsitytutors.com/vt-vtwa/uploads/formula_image/image/1182478/gif.latex $"z^{\circ}$"), and $\cos $y^{\circ}$=\sin $z^{\circ}$$ . If and , what is the value of ?

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