Start learning 50% faster. Sign in now
If we draw a perpendicular to a chord of any circle, the per divide the chord in two equal part. CD is chord for small circle and AB is chord for bigger circle. r = small circle radius R = bigger circle radius Apply PGT in ∆ OTC x2 = (x)2 – (12)2 ---- (1) Apply PGT in ∆ OAP x2 = (R)2 – (15)2 ------(2) From (1) and (2) R2 – (15)2 = r2 – (12)2 R2 – r2 = 225 – 114 = 81 Apply PGT in ∆ OTM R2 – r2 = TM2 81 = TM2 TM = 9 We know OT divide chord MN in 2 equal part (TM = TN) MN = TM + TN MN = 9 + 9 = 18
In which atmospheric layer is there no decrease in temperature with an increase in altitude?
Which of the following pairs is NOT correctly matched?
The Deccan trap was formed by the:
Popocatepetl volcano, which was in news recently, is located in which country?
Which mountain range must be crossed to experience the Chinook winds during the winter months?
The waves generated by an earthquake are called ________.
The Khyber Pass is located in which country?
Identify the largest freshwater lake in the world:
Identify the Southernmost Point of India's Territory:
Mount Kosciuszko is located in which country?