
If is an acute angle of a right angled triangle, then which of the following equation is not true?


Important Questions on Introduction to Trigonometry

Radio towers are used for transmitting a range of communication services including radio and television. The tower will either act as an antenna itself or support one or more antennas on its structure. On a similar concept, a radio station tower was built in two sections and . Tower is supported by wires from a point . Distance between the base of the tower and point is . From point the angle of elevation of the top of the section is and the angle of elevation of the top of the section is .
Based on the above information, answer the following question.
Find the length of the wire from the point to the top of section .

Radio towers are used for transmitting a range of communication services including radio and television. The tower will either act as an antenna itself or support one or more antennas on its structure. On a similar concept, a radio station tower was built in two sections and . Tower is supported by wires from a point . Distance between the base of the tower and point is . From point the angle of elevation of the top of the section is and the angle of elevation of the top of the section is .
Based on the above information, answer the following question.
Find the distance .

Radio towers are used for transmitting a range of communication services including radio and television. The tower will either act as an antenna itself or support one or more antennas on its structure. On a similar concept, a radio station tower was built in two sections and . Tower is supported by wires from a point . Distance between the base of the tower and point is . From point the angle of elevation of the top of the section is and the angle of elevation of the top of the section is .
Based on the above information, answer the following question.
Find the area of .

Radio towers are used for transmitting a range of communication services including radio and television. The tower will either act as an antenna itself or support one or more antennas on its structure. On a similar concept, a radio station tower was built in two sections and . Tower is supported by wires from a point . Distance between the base of the tower and point is . From point the angle of elevation of the top of the section is and the angle of elevation of the top of the section is .
Based on the above information, answer the following question.
Find the height of the section from the base of the tower.

on simplification, gives

If and , then prove that .

If , then is equal to
