Chapter 3 – Trigonometric Functions
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Example 15 Prove that cos( π/4+ x) + cos(π/4 – x) = root 2 cos
22
Oct
Example 15 Prove that cos( π/4+ x) + cos(π/4 – x) = root 2 cos Example 15 Prove that cos( π/4+ x) + cos(π/4 - x) = root 2 cos October 22, 2021 Category: Chapter 3 - Trigonometric Functions , Maths , NCERT Exemplar Class 11 ,
Example 14 Show that tan 3 x tan 2 x tan x = tan 3x – tan 2 x – tan x
22
Oct
Example 14 Show that tan 3 x tan 2 x tan x = tan 3x – tan 2 x – tan x Example 14 Show that tan 3 x tan 2 x tan x = tan 3x – tan 2 x – tan x October 22, 2021 Category: Chapter 3 - Trigonometric Functions , Maths [...]
Example 13 Prove that sin ( x + y) / sin ( x – y) = tan x + tan y / tan x – tan y
22
Oct
Example 13 Prove that sin ( x + y) / sin ( x – y) = tan x + tan y / tan x – tan y Example 13 Prove that sin ( x + y) / sin ( x - y) = tan x + tan y / tan x - tan y October [...]
Example 12 Find the value of tan 13π/12 .
22
Oct
Example 12 Find the value of tan 13π/12 . Example 12 Find the value of tan 13π/12 . October 22, 2021 Category: Chapter 3 - Trigonometric Functions , Maths , NCERT Exemplar Class 11 ,
Example 11 Find the value of sin 15°.
22
Oct
Example 11 Find the value of sin 15°. Example 11 Find the value of sin 15°. October 22, 2021 Category: Chapter 3 - Trigonometric Functions , Maths , NCERT Exemplar Class 11 ,
Example 10 Prove that 3sin π /6 sec π /3 – 4sin 5π /6 cot π /4 = 1
22
Oct
Example 10 Prove that 3sin π /6 sec π /3 – 4sin 5π /6 cot π /4 = 1 Example 10 Prove that 3sin π /6 sec π /3 - 4sin 5π /6 cot π /4 = 1 October 22, 2021 Category: Chapter 3 - Trigonometric Functions , Maths , NCERT Exemplar Class 11 ,
Example 9 Find the value of cos (–1710°)
22
Oct
Example 9 Find the value of cos (–1710°) Example 9 Find the value of cos (–1710°) October 22, 2021 Category: Chapter 3 - Trigonometric Functions , Maths , NCERT Exemplar Class 11 ,
Example 8 Find the value of sin 31π/3.
22
Oct
Example 8 Find the value of sin 31π/3. Example 8 Find the value of sin 31π/3. October 22, 2021 Category: Chapter 3 - Trigonometric Functions , Maths , NCERT Exemplar Class 11 ,
The minute hand of a watch is 1.5 cm long. How far does its tip move in 40 minutes? (Use π = 3.14).
22
Oct
The minute hand of a watch is 1.5 cm long. How far does its tip move in 40 minutes? (Use π = 3.14). The minute hand of a watch is 1.5 cm long. How far does its tip move in 40 minutes? (Use π = 3.14). October 22, 2021 Category: Chapter 3 - Trigonometric Functions [...]
Find the radius of the circle in which a central angle of 60 degree intercepts an arc of length 37.4 cm (use pi=(22)/7).
22
Oct
Find the radius of the circle in which a central angle of 60 degree intercepts an arc of length 37.4 cm (use pi=(22)/7). Find the radius of the circle in which a central angle of 60 degree intercepts an arc of length 37.4 cm (use pi=(22)/7). October 22, 2021 Category: Chapter 3 - Trigonometric Functions [...]