Question

give some possible questions on trigonometry chapter​

Answer 1

1. In a right triangle ABC with angle A equal to 90°, find angle B and C so that sin(B) = cos(B).
2. The lengths of side AB and side BC of a scalene triangle ABC are 12 cm and 8 cm respectively. The size of angle C is 59°. Find the length of side AC.
3. From the top of a 200 meters high building, the angle of depression to the bottom of a second building is 20 degrees. From the same point, the angle of elevation to the top of the second building is 10 degrees. Calculate the height of the second building.
4. Karla is riding vertically in a hot air balloon, directly over a point P on the ground. Karla spots a parked car on the ground at an angle of depression of 30°. The balloon rises 50 meters. Now the angle of depression to the car is 35 degrees. How far is the car from point P?
5. If the shadow of a building increases by 10 meters when the angle of elevation of the sun rays decreases from 70° to 60°, what is the height of the building?

1. prove : (1 - sin A)/(1 + sin A) = (sec A - tan A)2
2. Prove that, √{(sec θ – 1)/(sec θ + 1)} = cosec θ - cot θ.

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Answer 2

Step-by-step explanation:

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