Question

2 tan 45 sin90= a.0 b.1 c.2 d.1/2 e.4 f.5????​

Answer 1

Answer:

in a right-angled triangle.

These are defined by:

sin θ = D4t1.pdf, cos θ = D4t2.pdf, tan θ = , where 0° < θ < 90°.

Students should learn these ratios thoroughly. One simple mnemonic that might assist them is SOH CAH TOA, consisting of the first letter of each ratio and the first letter of the sides making up that ratio.

In a right-angled triangle, the other two angles are complements of each other. As the diagram below shows, the side opposite one of these angles is adjacent to the other.

Thus, it can be seen that,

sin θ = cos (90° − θ) and cos θ = sin (90° − θ) if 0° < θ < 90°

The cosine (co-sine) is so named since the cosine of an angle is the sine of its complement.

These ratios can be used to find sides and angles in right-angled triangles.

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Answer 2

Answer:

sin θ = D4t1.pdf, cos θ = D4t2.pdf, tan θ = , where 0° < θ < 90°.

Students should learn these ratios thoroughly. One simple mnemonic that might assist them is SOH CAH TOA, consisting of the first letter of each ratio and the first letter of the sides making up that ratio.....

Thus, it can be seen that,

sin θ = cos (90° − θ) and cos θ = sin (90° − θ) if 0° < θ < 90°

The cosine (co-sine) is so named since the cosine of an angle is the sine of its complement.