Question
Fully opened blossoms in apple may be killed at
temperature belowSolution
At full bloom, a temperature of 28 °F or -2.2 °C will kill approximately 10 percent of the flowers on apple trees, while a temperature of 25 °F or -3.8 °C will kill approximately 90 percent of the flowers.
- If 2cosec 2  A – cot 2 A = 5 and 0 o < A < 90 o , then find the value of ‘A’.
sin2 9 ° + sin2 10 ° + sin2 11 ° + sin2 12 ° + ……… + sin2 81 ° = ?
...Find the simplified value of the following expression if a = 30o
[(sin2a + cos2a} ÷ seca × sina ÷ cosa]
...sin2 7 ° + sin2 8 ° + sin2 9 ° + sin2 10 ° + ……… + sin2 83 ° = ?
...If tan² 45°- cos² 60° x sin 45° cos 45° cot 30°, then find the value of 'x'.
Find the value of `1/2`  cosec 10  - `2/(cosec 70)`  ?
If cos θ + sec θ = √2, then the value of cos³ θ+ sec³ θ is:


Find the value of sin 240 °