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In the Delta ABC the foot of the perpend...

In the `Delta ABC` the foot of the perpendicular from A to BC is D. Given that `tan B = (4)/(3), cos C = (15)/(17) and ` that `AB = 20 cm,` calculate without using tables
(i) the lengths of the sides AC and BC,
(ii) the value of sin A.

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ICSE-COMPOUND AND MULTIPLE ANGLES -EXERCISE 5(A)
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  8. If sin (alpha + beta) = 4/5 , sin (alpha -beta) = (5)/(13), alpha + be...

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  9. Prove that 1 + tan 2 theta tan theta = sec 2 theta .

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  16. Given that A = B +C. prove that tan A - tan B - tan C = tan A tan B ...

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