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Trigonometry

• Trigonometric Ratio

If one of the trigonometric ratios of an acute angle is known, then the remaining trigonometric ratios of the angle can be calculated.

Example:

If , then find the value of sec θ(1 + tan θ).

Solution:

It is given that

⇒ AB = 7x and AC = 25x, where x is some positive integer

By applying Pythagoras theorem in ΔABC, we get:

• Use trigonometric ratio in …

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