A ship started at a certain port and travelled N 48° E at the rate of 32 kph. After 1.5 hours, a second ship started at the same port at the rate of 45 kph and travelled S 39° E. What is the distance travelled by the second ship when it is directly south of the first ship?

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Q: From the formula of sin (A + B), deduce the formulae of cos(A+ B) and cos (A- B).

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A: Follow the procedure given below.

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A: Given,

Q: 0,

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Q: Use your calculator to find sin ? and cos ? if the point (9.38, 7.09) is on the terminal side of ?.…

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Q: 4. Apply half-angle formula to find b. sin 15° 5m C. COS a. cos 15°

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Q: Use a calculator to find the following. Round to four decimal places.   cos 48.3 degree

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Q: Given that 16cot A = 12:Find the value of sinA + cos A sinA – cosA -

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