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An observer wishes to determine the height of a tower. He takes sights at the top of the tower from A and B, which are 50 feet apart, at the same elevation on a direct line with the tower. The vertical angle at point A is 300 and at point B is 400. What is the height of the tower?
A PLDT tower and a monument stand on a level plane. The angles of depression of the top and bottom of the monument viewed from the top of the PLDT tower are 13 degrees and 35 degrees, respectively. The height of the tower is 50 meters. Find the height of the monument.
If x= cos^2 tetha /(1-cos^2teta) + 2csc^2teta and y = 2cot^2 teta, express y in terms of x
prove that
2sin^2theta+2cos^2theta-1=0
What is the area of the circumscribing circle if the side of a right angle triangle are 3,4, and 5 meter?
C. Write three (3) specific areas where Trigonometry can be applied. Answer in 3 to 4 sentences
B. State the Sine Law and the Cosine Law in 3 to 4 sentences.
A. State the Pythagorean Theorem in 3 to 4 sentences.

Problem C

Determine the numerical value of the following expression without the use of a calculator: 

problem is found on the website below

https://iymc.info/docs/IYMC_Qualification_Round_2020.pdf


4. Find the exact value of tan(sin-1(-1/2))


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